26+ Years Manufacturer
OEM & Private Label
EN12413 Certified
Export to 60+ Countries
OEM Metal Cutting Disc Manufacturer
A metal cutting disc is a resin‑bonded abrasive wheel reinforced with fiberglass mesh, designed to cut through metal materials by high‑speed rotation. At DOME, we specialize in the manufacture of high‑performance metal cutting discs that deliver fast, smooth cuts across a wide range of metal profiles, including carbon steel, stainless steel, rebar, angle iron, pipe, and sheet metal.
Choose DOME for 26 years of abrasives expertise, in-house OEM manufacturing, international certifications (EN12413, MPA, BSCI, ISO9001), a full size range (38–405mm), and flexible OEM/ODM solutions for global partners.
Dome Abrasives Catalogue
What Is a Metal Cutting Disc
Cutting discs for metal are manufactured by bonding abrasive material (such as aluminum oxide) with a resin binder and embedding a fiberglass mesh to enhance impact resistance. Metal cutting discs operate by spinning at high speeds, using the abrasive material to cut through and separate the metal.
The thickness of the metal cutting discs directly affects cutting efficiency: thinner discs (e.g., 1 mm) offer greater precision and produce fewer burrs but are relatively fragile, whereas thicker discs are more durable.
When using metal cutting wheels, it is essential to ensure that the tool’s actual rotational speed (RPM) does not exceed the disc’s rated maximum safe speed; exceeding this limit can cause the disc to shatter.
What Materials Can Be Cut
| Material | Suitable |
|---|---|
| Carbon Steel | ✓ |
| Stainless Steel | ✓ |
| Rebar | ✓ |
| Pipe | ✓ |
| Sheet Metal | ✓ |
| Cast Iron | ✓ |
| Aluminum | Special Disc |
Why Choose Resin Bonded Metal Cutting Disc
Resin-bonded metal cutting discs are the most commonly used type in the industrial cutting sector. Compared to those with ceramic, rubber, or metal bonds, they offer significant advantages in terms of cutting efficiency, safety, and versatility.
Self‑sharpening – Abrasive grains naturally break away during use, constantly exposing new sharp grains to maintain high cutting performance.
Ultra‑thin design – Down to 1 mm thick, significantly reducing cutting resistance for fast, precise cuts with minimal burrs.
Impact resistance & high‑RPM capability – The resin binder, reinforced with fiberglass mesh, ensures safe operation at high speeds, allowing you to fully utilize your tool’s power.
How Metal Cutting Disc Works
A metal cutting disc is essentially a high-speed rotating grinding tool; its “cutting” action does not rely on the shearing force of a blade edge, but rather on high-speed friction between abrasive grains and the metal surface, which generates chips and separates the material.
The material removal efficiency of a metal cutting disc is determined by a combination of factors: abrasive grain cutting characteristics, the self-sharpening behavior regulated by the bond, dynamic reinforcement via the fiber mesh, and the optimized matching of disc thickness with rotational speed. Formulations for abrasives and bonding agents must be adjusted according to the specific metal type to achieve optimal performance.
Metal Cutting Discs Series
We manufacture high-performance metal cutting discs for global OEM brands. Our product range spans from ultra-thin metal cutting discs for angle grinders to heavy-duty discs for stationary cut-off machines, available for wholesale in various standard diameters (4, 4.5, 7, and 9 inches) and bore sizes.
Ultra-thin Cutting Disc
Ultra-thin metal cutting discs deliver unmatched cutting speed, precision, and clean results with minimal burrs and material waste – the ideal choice for high-efficiency, fine cutting of thin to medium materials.
| Item | Details |
|---|---|
| Applications | Carbon steel, stainless steel, iron, aluminum, copper, thin-walled pipes, sheet metal, profiles (angle iron, channel steel), rebar |
| Thickness | 1.0mm – Ultra-thin, for maximum speed and precision (thin sheets, fine cutting) 1.2mm – Universal thin thickness, best balance of speed and durability (most popular) 1.6mm – Enhanced thin thickness, slightly better impact resistance while maintaining fast cutting |
| RPM | Depends on disc diameter. Typical ratings (example): • 105mm – Max. 15,200 RPM • 115mm – Max. 13,300 RPM • 125mm – Max. 12,200 RPM (Always check the disc label; never exceed the rated RPM.) |
| Specifications (Common Sizes) | Outer Diameter: 105mm, 115mm, 125mm Arbor Size: 16mm (5/8″), 22.2mm (7/8″) Thickness: 1.0mm, 1.2mm, 1.6mm |
Standard Cutting Disc
Standard metal cutting discs—characterized by long service life, high impact resistance, adaptability to high feed rates, and stable cut surfaces—are the most reliable and cost-effective cutting tools for heavy structural steel, solid materials, and demanding on-site operating conditions.
| Item | Details |
|---|---|
| Applications | Ferrous metals such as carbon steel, stainless steel, cast iron, structural steel (H-beams, I-beams, channel steel), solid round/square bars, large-diameter pipes, rebar, and rails (heavy-duty). |
| Thickness | 2.0mm – Light-duty standard blade; balances speed and durability; suitable for medium-thickness materials (5–15mm). 2.5mm – General-purpose standard blade; offers balanced overall performance; the most commonly used specification. 3.0mm – Heavy-duty standard blade; designed for thick solid stock, large structural steel sections, and demanding operating conditions. |
| RPM | Depending on the outer diameter, typical values are as follows (for reference only; always refer to the product label): 115mm – Max. 13,300 RPM 125mm – Max. 12,200 RPM 150mm – Max. 10,200 RPM 180mm – Max. 8,500 RPM 230mm – Max. 6,600 RPM |
| Specifications (Common Sizes) | Outer diameter: 115mm, 125mm, 150mm, 180mm, 230mm Arbor Size: 22.2mm (7/8″) Thickness: 2.0mm, 2.5mm, 3.0mm |
Large Diameter Cutting Disc
Large-diameter metal cutting discs enable deep cuts with a large radius; when used with stationary cutting machines, they allow for the single-pass cutting of large structural steel sections, large-diameter pipes, and rails. Combining high efficiency, precision, durability, and safety, they are the professional choice for heavy steel structure fabrication and high-volume cutting operations.
| Item | Details |
|---|---|
| Applications | Various ferrous metals, including carbon steel (H-beams, I-beams, channel steel, angle steel), thick stainless steel plates/heavy-wall pipes, cast iron, solid round/square steel bars (diameter ≥50mm), steel rails (U71Mn/U75V), large-diameter piping (DN100 and above), and scrap metal. |
| Thickness | 2.5mm – Lightweight heavy-duty disc; suitable for medium-section profiles and pipes, balancing speed and durability. 3.0mm – General-purpose heavy-duty disc; offers balanced overall performance and is the most commonly used specification. 3.5mm / 4.0mm – Ultra-thick heavy-duty discs; designed for large structural steel, rails, and extremely demanding operating conditions. |
| RPM | Depending on the outer diameter, typical values are as follows (for reference only; always refer to the product label): 305mm – Up to 5,100 RPM 355mm – Up to 4,400 RPM 405mm – Up to 3,800 RPM (Large-diameter blades operate at extremely high peripheral speeds; exceeding the speed limit is the primary cause of breakage, so strict adherence is mandatory.) |
| Specifications (Common Sizes) | Outer Diameter: 305mm, 355mm, 405mm Arbor Size: 25.4mm (1″), 32mm (5/4″) Thickness: 2.0mm, 2.5mm, 3.0mm, 3.5mm, 3.8mm, 4.0mm |
Stainless Steel Cutting Disc
Featuring a core composition of zirconia-alumina abrasive and a high-temperature-resistant resin formula, these stainless steel cutting discs are precisely optimized for the material’s low thermal conductivity and high-viscosity characteristics. They deliver efficient cutting performance—characterized by the absence of burn marks, no chip adhesion, smooth cut surfaces, and long service life—making them the professional choice offering the best overall value in stainless steel processing.
| Item | Details |
|---|---|
| Applications | Austenitic stainless steel (304, 316, 316L, 321, etc.), duplex stainless steel, heat-resistant steel, stainless steel sheet/plate, stainless steel pipe/square tubing, stainless steel angle/channel steel, stainless steel solid bar, stainless steel decorative profiles, etc. |
| Thickness | 1.0mm – Ultra-thin disc for thin stainless steel sheets (≤3mm) and thin-walled tubing; designed for maximum cutting speed and superior surface finish. 1.2mm – General-purpose thin disc; the most common specification, balancing speed and durability; suitable for both tubing and sheet metal. 1.6mm – Lightweight standard disc for cutting medium-to-thick stainless steel plates (3–10mm) and profiles; offers enhanced impact resistance. 2.5mm – Standard disc for heavy-duty cutting of thick-walled stainless steel tubing and solid bars (≤20mm). |
| RPM | Depending on the outer diameter, typical values are as follows (for reference only; always refer to the product label): 105mm – Max. 15,200 RPM 115mm – Max. 13,300 RPM 125mm – Max. 12,200 RPM 150mm – Max. 10,200 RPM 180mm – Max. 8,500 RPM 230mm – Max. 6,600 RPM 355mm – Max. 4,400 RPM (for stationary cutting machines) (Cutting stainless steel requires maintaining a consistently high rotational speed; low speeds can lead to material adhesion and burning.) |
| Specifications (Common Sizes) | Outer Diameter: 105mm, 115mm, 125mm, 150mm, 180mm, 230mm, 355mm Arbor Size: 16mm (5/8″), 22.23mm (7/8″), 25.4mm (1″), 32mm (5/4″) Thickness: 1.0mm, 1.2mm, 1.6mm, 2.5mm |
Carbon Steel Cutting Disc
Carbon steel cutting discs deliver exceptional cost-performance by combining brown fused alumina abrasive with an economical resin formula. Offering high cutting speeds, long service life, and extensive versatility, they serve as the most reliable, economical, and widely used workhorse tools for steel structure fabrication, construction sites, and general metal cutting.
| Item | Details |
|---|---|
| Applications | Various ferrous metals, such as ordinary carbon structural steel (Q235, Q345, 45# steel, etc.), carbon steel sheets/plates, carbon steel pipes/square tubes, angle iron/channel steel/H-beams/I-beams, solid round/square bars, rebar, and cast iron. |
| Thickness | 1.0mm – Ultra-thin disc; designed for thin carbon steel sheets (≤3mm) and thin-walled tubing; optimized for maximum cutting speed. 1.2mm – General-purpose thin disc; the preferred choice for everyday cutting of thin carbon steel sheets, tubing, and light profiles; one of the most common specifications. 1.6mm – Light-duty standard disc; for cutting medium-to-thick carbon steel plates (5–15mm) and profiles; balances speed and durability. 2.5mm – General-purpose standard disc; offers the most balanced overall performance; one of the most common specifications. 3.0mm – Heavy-duty standard disc; for thick solid materials, large structural steel sections, and demanding operating conditions. 3.5mm / 4.0mm – Extra-thick heavy-duty discs (specifically for large diameters); for extreme applications such as large structural steel sections and railway rails. |
| RPM | Depending on the outer diameter, typical values are as follows (for reference only; always refer to the product label): 105mm – Max. 15,200 RPM 115mm – Max. 13,300 RPM 125mm – Max. 12,200 RPM 180mm – Max. 8,500 RPM 230mm – Max. 6,600 RPM 305mm – Max. 5,100 RPM 355mm – Max. 4,400 RPM 405mm – Max. 3,800 RPM |
| Specifications (Common Sizes) | Outer Diameter: 105mm, 115mm, 125mm, 150mm, 180mm, 230mm, 305mm, 355mm, 400mm Arbor Size: 16mm (5/8), 22.2mm (7/8″), 25.4mm (1″), 32mm (5/4″) Thickness: 1.0mm, 1.2mm, 1.6mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm |
Rail Cutting Disc
Rail cutting discs feature zirconia alumina abrasive, a high-strength resin bond, and multi-layer reinforced fiberglass. With core advantages such as superior impact resistance, exceptional wear resistance, high cutting efficiency, and a high safety margin, they are the professional choice for ensuring safety and efficiency in railway laying, track maintenance, and industrial rail operations.
| Item | Details |
|---|---|
| Applications | Ultra-high-hardness/high-wear-resistance ferrous metals, including rails (high-carbon, high-manganese grades such as U71Mn, U75V, and PD3), crane rails (QU70–QU120), overhead crane rails, rails for switches/turnouts, high-manganese steel frogs, and cast steel risers/gates. |
| Thickness | 4.0mm – Extra-thick heavy-duty disc; suitable for 75kg/m heavy rails and components with extremely complex cross-sections, such as high-manganese steel frogs and switches. |
| RPM | Depending on the outer diameter, typical values are as follows (for reference only; always refer to the product label): 355mm – Max. 4,400 RPM 405mm – Max. 3,800 RPM Overspeeding is the primary cause of rail cutting disc failure; this limit must be strictly observed! |
| Specifications (Common Sizes) | Outer diameter: 355mm (most common), 400mm Arbor Size: 25.4mm (1″) Thickness: 4.0mm |
Popular Metal Cutting Disc Sizes
DOME metal cutting discs cover a full range of sizes from 38mm to 405mm. The smaller sizes (100–150mm) offer flexibility and portability, making them ideal for handheld angle grinders, while the larger sizes (305–405mm) are designed for deep cutting and compatible with stationary cutting machines—ensuring the right size and specification for everything from on-site repairs to mass production.
100mm (4″) Metal Cutting Disc
Suitable for: DIY / Small Grinder / Fine Cutting
100mm (4″) – The smallest mainstream size, designed for small angle grinders and optimized for precision cutting and work in tight spaces. It offers a cutting depth of approximately 30mm and a thickness of 1.0–3.0mm. Suitable for DIY projects, thin-walled tubing, sheet metal trimming, automotive repair, and metalworking. Lightweight and maneuverable, it is easy to use and the top choice for home users and precision cutting tasks.
115mm (4.5″) Metal Cutting Disc
Suitable for: General-Purpose Cutting / European Market Standard / Versatile Application
115mm (4.5″) – The dominant specification in the European market, hailed as the “golden size” for handheld cutting. It offers a cutting depth of approximately 35mm and a thickness of 1.0–3.0mm. Perfectly balancing portability and cutting performance, it is compatible with 700W–1000W angle grinders and suitable for the vast majority of general cutting tasks in construction, plumbing, and maintenance. Accessories are readily available, offering excellent value for money.
125mm (5″) Metal Cutting Disc
Suitable for: Best-Selling Worldwide / Maximum Versatility / High-Volume Applications
125mm (5″) – The best-selling cutting disc size globally, covering major markets such as North America, Asia, and Australia. It offers a cutting depth of approximately 40mm and a thickness of 1.0–3.0mm. Compared to the 115mm size, it delivers superior cutting performance while maintaining virtually the same level of portability. Highly versatile, it is a core, high-volume product for distributors and wholesalers.
180mm (7″) Metal Cutting Disc
Suitable for: Heavy-Duty Cutting / Large-Section Materials / High-Power Grinders
180mm (7″) – An entry-level specification for heavy-duty handheld cutting, designed for use with high-power (1500W–2200W) angle grinders. It offers a cutting depth of approximately 60mm and a disc thickness of 1.6–3.0mm. With a cutting depth nearly double that of 115mm or 125mm models, it is suitable for medium-sized angle iron, channel steel, thick-walled piping, steel structure installation, and shipbuilding—making it the top choice for those seeking a balance between portability and deep cutting capability.
230mm (9″) Metal Cutting Disc
Suitable for: Construction Site / Heavy Rebar Cutting / Maximum Hand-Held Capacity
230mm (9″) – The maximum size that can be installed on a handheld angle grinder, representing the limit of handheld cutting capability. When used with a 2000W–2600W high-power device, the cutting depth is approximately 75mm, with a thickness of 1.6–3.0mm. It can cut building steel bars, large-diameter pipes, and medium-sized steel sections in one pass. Suitable for on-site operations such as building construction, bridge construction, and heavy equipment maintenance.
355mm (14″) Metal Cutting Disc
Suitable for: Cut-off Machine / Structural Steel / Rail Cutting / High-Volume Batch Cutting
355mm (14″) – The standard configuration for stationary profile cutters and a key specification for steel structure fabrication and batch cutting operations. It offers a cutting depth of approximately 120mm and handles material thicknesses of 2.0–4.0mm. Capable of cutting large H-beams, I-beams, large-diameter thick-walled pipes, and standard steel rails in a single pass, it ensures high precision and clean cuts without the need to flip the workpiece. Widely used in steel structure fabrication, railway maintenance, and metal recycling.
Metal Cutting Discs Features
Fast and Accurate
Our ultra‑thin cutting discs for metal come with sharp abrasives that actually stay sharp while you cut. They slide through metal fast, leave smooth edges, and don’t create many burrs. So you spend less time cleaning up afterwards – and you get more jobs finished each day, without the hassle.
Built to Last
We use premium abrasives and tough resin bonds that wear down slowly and evenly. Each metal cutting wheel gives you more cuts before you need to change it, meaning fewer stops and less downtime. Over a full shift, that adds up to real savings – a lower cost for every single cut you make.
Smooth and Comfortable
Every metal cutting wheel is precision‑balanced, and our fiberglass layers soak up vibration and chatter. Your angle grinder feels steadier in your hands, with less kickback and less strain on your arms. You can work longer without getting tired, stay in control, and cut more accurately every time.
Safe and Dependable
All our metal cut off wheels meet EN12413 and MPA standards. We add extra fiberglass reinforcement for strength at high speeds, and clearly mark the max RPM on every disc. Plus, strict factory checks mean you can trust each one to perform safely – even on heavy, demanding jobs.
Metal Cutting Disc Applications
Dome metal cutting discs serve key industries including metal fabrication, construction, automotive, and welding. Whether you need a metal fabrication cutting disc for structural work, a durable construction cutting wheel, a precise automotive cutting disc, or a reliable welding cutting disc, our resin wheels deliver consistent performance.
Cutting Rebar
Rebar features a ribbed surface; cutting it causes significant vibration and a high risk of disc breakage. As a manufacturer of metal cutting discs, we recommend using a 1.6mm disc for rebar with a diameter of 16mm or less. For rebar larger than 16mm, we advise using a 2.5mm thick disc to ensure impact resistance and a longer service life. Never use ultra-thin cutting discs on rebar; the impact from the ribs makes them highly prone to shattering, posing a safety hazard. DOME rebar cutting discs utilize a high-toughness resin formula that offers superior impact resistance.
Cutting Steel Pipe
For thin-walled pipes, use 1.0 mm or 1.2 mm ultra-thin metal cutting discs to ensure fast cutting and smooth, deformation-free pipe ends. For thick-walled pipes, use 1.6 mm or 2.5 mm standard cutting discs, which offer superior rigidity and durability. For large-diameter, thick-walled pipes, a 355 mm large-diameter metal cutting disc paired with a stationary cutting machine is recommended to achieve a clean, single-pass cut. DOME steel pipe cutting discs feature formulations optimized for various wall thicknesses—preventing thin-walled pipes from flattening and thick-walled pipes from binding—thereby ensuring efficient and seamless pipe installation.
Cutting Stainless Steel
Stainless steel has low thermal conductivity and high stickiness, making it prone to burning during processing; therefore, specialized stainless steel cutting discs must be used. DOME stainless steel cutting discs feature zirconia alumina abrasive grains that offer excellent self-sharpening properties and resist chip adhesion. A relatively soft bond allows dulled abrasive grains to shed promptly, while special fillers minimize frictional heat. Recommended thicknesses are 1.0 mm or 1.2 mm, ensuring a bright, silvery-white cut without discoloration. DOME cutting discs for stainless steel are widely used in the manufacture of kitchenware and food processing machinery, as well as in decorative engineering projects.
Cutting Angle Iron
The L-shaped cross-section of angle iron presents significant resistance at the corner, making the cutting process prone to snagging. Use 1.2mm or 1.6mm ultra-thin cutting discs for light-duty angle iron, and 2.5mm standard discs for heavy-duty applications. We recommend starting the cut at the sharp edge and proceeding from the thinner section toward the thicker one for the smoothest operation. DOME angle iron cutting discs feature a specialized abrasive formula and balanced resin hardness, ensuring smooth cutting without bouncing. Experienced professionals in steel structure and shelving manufacturing trust this product.
Cutting Structural Steel
Cutting H-beams and I-beams requires a stationary cutting machine equipped with large-diameter cutting discs. Use 355mm cutting discs (2.5mm or 3.0mm thick) for small-to-medium steel beams, and 400mm cutting discs (3.0mm or 3.5mm thick) for large steel beams—allowing for a single-pass cut without needing to flip the workpiece. Ensure the workpiece is securely clamped and the feed rate is steady. DOME structural steel cutting discs are engineered for heavy-duty applications; their high-temperature-resistant bonding agent ensures continuous cutting without disc burnout, making them a reliable choice for steel structure fabrication.
Cutting Sheet Metal
Use 1.0mm ultra-thin metal cutting discs for thin sheets to ensure narrow kerfs, fast cutting speeds, and minimal deformation. For medium-to-thick plates, use 1.2mm or 1.6mm metal cutting discs. For thick plates exceeding 10mm, use 2.5mm metal cutting discs or a stationary cutting machine. Ensure proper ventilation when cutting galvanized sheets. DOME cutting discs offer high sharpness and produce minimal burrs, eliminating the need for additional grinding after cutting.
Recommended Cutting Disc for Metal
115mm Inox Cutting Disc
125mm Steel/Stainless Steel Cutting Disc
230mm Standard Cutting Disc
355mm Large Diameter Cutting Disc
Metal Cutting Disc Manufacturing Process
Every high-performance metal cutting disc begins with premium abrasive grains—aluminum oxide, zirconia, or silicon carbide—precisely blended with advanced resin bonding agents. Our manufacturing process is built on precision engineering and rigorous quality control at every stage, from raw material selection to final packaging.
Production Process
Sand Calcination → Mixing → Molding → Hardening → Balance Testing → Packaging
Our Factory Capability
State-of-the-art manufacturing facilities equipped with automated pressing lines, precision curing ovens, and in-house QC laboratories. Annual production capacity exceeding 200 million discs ensures reliable supply for high-volume B2B orders. Our factory adopts Italian production technology with strict quality management throughout the entire production process.
Technical Advantages
Optimized abrasive grain and bond systems deliver up to 30% longer service life and significantly faster cutting speeds. Advanced fiberglass reinforcement provides superior structural integrity under high-speed operation up to 80m/s. Our R&D team continuously develops innovative bonding technologies and abrasive formulations to meet evolving industry demands.
What We Improve
Reduced cutting time and material waste through higher cutting efficiency. Enhanced operator safety through rigorous EN 12413 and MPA-certified testing protocols. Extended disc lifespan minimizing replacement frequency and downtime. Consistent, reliable performance across all metal types—from carbon steel to stainless steel and aluminum.
Metal Cutting Disc Quality Control
Incoming Inspection
Every batch of abrasive material, resin, and fiberglass mesh must undergo inspection upon arrival at the factory. If the abrasive grain size is off, the material won’t cut effectively; if the resin is unstable, bonding strength cannot be guaranteed; and if the fiberglass mesh lacks sufficient strength, it poses a safety risk. Failure to control raw material quality renders all subsequent efforts futile. DOME rigorously tests every incoming batch, allowing only those that pass inspection to enter the production workshop. Consistent raw materials ensure consistent finished products—this is our bottom line as a manufacturer.
RPM Test
Every cutting disc undergoes a rotational speed test before leaving the factory, verified by running it at 150% of its rated maximum RPM. This ensures structural integrity and prevents breakage at extreme speeds. While we cannot control which brand of angle grinder the customer uses, every disc must be safe upon leaving our facility. 100% of DOME products pass this speed test—guaranteeing they will not shatter under overspeed conditions—as a firm commitment.
Burst Test
Burst testing serves as the most direct safety verification. Cutting discs are gradually accelerated from a standstill until they shatter. The burst speed is recorded to ensure the actual failure point is well above the rated safety speed. DOME’s internal standards are 20% stricter than the EN12413 requirements. We conduct random inspections on every batch and release products only after they pass. Before shipment, we push the products to their limits ourselves to identify and resolve any issues; we never leave risks for the customer to deal with.
Attenuation test
Will a cutting disc’s performance drop during continuous use? That is the question a performance degradation test aims to answer. DOME conducts uninterrupted cutting tests that simulate real-world operating conditions, recording changes in cutting speed and wear patterns from the first cut to the last. Only discs that exhibit a stable performance curve and minimal degradation pass the test. Discs that degrade rapidly may perform well initially, but cutting becomes progressively slower and more laborious as usage continues; we do not allow such discs to leave the factory. The standard for a high-quality disc is simple: the performance of the hundredth cut matches that of the first.
Balance Test
If a cutting disc spins eccentrically, it causes vibration when held, results in crooked cuts, and damages the angle grinder’s spindle. All DOME cutting discs undergo dynamic balancing tests. Larger-diameter discs are subject to even stricter balancing standards; any deviation results in immediate rejection—they are scrapped and never leave the factory. A properly balanced disc runs smoothly and steadily when mounted, without any wobbling or bouncing.
Packing Inspection
We check whether labels are applied accurately, outer carton information is correct, and moisture-proofing measures are adequate. These details may seem minor, but an incorrect label leaves the customer unsure how to use the product, while poor moisture protection causes the resin’s moisture-resistant performance to deteriorate. Every carton from DOME undergoes a visual inspection before leaving the factory, with individual verification of labels, specifications, quantities, and packaging integrity. No matter how well the preceding steps are executed, a packaging failure renders all that prior effort wasted.
Quality Assurance
EN12413 Certification
EN12413 is the core European safety standard for bonded abrasive products. It specifies the safety requirements and testing methods that must be met regarding the design, manufacture, and use of cutting discs; compliance signifies that DOME cutting discs have undergone rigorous verification for factors such as burst strength, lateral load capacity, and maximum operating speed.
ISO9001 Certification
ISO9001 is the world’s most widely adopted quality management system standard. It signifies that DOME has established a standardized quality control system covering the entire process—from raw material procurement and manufacturing to the release of finished products. It demonstrates our ability to consistently provide products that meet customer requirements and applicable regulations, serving as a guarantee of quality that customers can trust.
ISO14001 Certification
ISO14001 is an internationally recognized standard for environmental management systems. It signifies that DOME has established systematic environmental management processes. This certification demonstrates our ability to continuously reduce the environmental impact of our production, comply with environmental regulations, and pursue ongoing improvement, thereby reflecting our social responsibility and commitment to sustainable development as a manufacturing enterprise.
BSCI Certification
BSCI (Business Social Compliance Initiative) is a leading European standard for social responsibility audits in supply chains. Factories representing DOME have passed rigorous independent third-party audits covering social responsibility, labor rights, working conditions, and environmental protection, demonstrating that our production processes meet international requirements for human rights protection and sustainable development.
MPA Certification
MPA (German Material Testing Institute) certification is a recognized mark of authority for product safety and quality in German and European markets. It signifies that DOME cutting discs have successfully passed product testing and factory audits conducted by an independent third party in accordance with the most rigorous German standards, demonstrating that our products achieve world-class levels of safety and reliability.
OEM Metal Cutting Disc Solutions
As a trusted manufacturer of OEM metal cutting disc solutions, we offer comprehensive private label services to help you launch or expand your abrasive product line. Whether you are a distributor, wholesaler, or established brand, our flexible OEM abrasive wheels program gives you full control over product identity and specifications.
Custom logo printing
Your brand, your identity. We apply custom logos and labels on every disc, helping you build brand recognition in the marketplace.
Custom packaging
From retail-ready blister packs to bulk cartons, we design packaging that protects your products and captures attention on the shelf.
Custom formulas
Tailor abrasive compositions to match specific materials — carbon steel, stainless steel, aluminum, or general fabrication work.
Custom sizes
Choose from standard diameters (4″, 4.5″, 5″, 7″, 9″ and more) or specify custom dimensions to fit your market needs.
With OEM metal cutting discs and private label abrasive wheels, you get factory-direct pricing, consistent quality across every batch, and a reliable supply chain that supports your growth. Whether you are entering new markets or strengthening your existing brand, our OEM cutting disc solutions give you the flexibility to compete and win.
How to Choose Metal Cutting Disc
Selecting the right metal cutting disc directly impacts cutting efficiency, safety, and overall costs. Whether you are a distributor, wholesaler, or workshop operator, simply focus on four key factors: workpiece material, disc thickness, equipment rotational speed, and the operating environment. We help you quickly match the ideal high-performance resin cutting discs—suitable for common materials like stainless steel, rebar, and structural steel—to boost cutting speed, extend service life, and lower the cost per cut.
Thickness– Thin for Speed, Thick for Durability
The thickness of a cutting disc directly determines cutting efficiency and service life. Ultra-thin cutting discs (1.0–1.6 mm) offer fast cutting, minimal burrs, and high precision, making them ideal for thin sheets and tubing. Standard cutting discs (2.0–3.0 mm) are more durable and impact-resistant, suitable for solid materials and heavy-duty cutting. Match the cutting disc to the workpiece thickness: use thin discs for thin materials and thick discs for thick ones. An incorrect choice can lead to an inability to cut or cutting disc breakage, compromising both safety and efficiency.
Diameter – Your Tool Decides the Size
The outer diameter of the cutting disc must match the angle grinder or cutting machine. Cutting discs sized 100–150mm are paired with handheld angle grinders for flexibility and ease of use. Cutting discs sized 180–230mm are used with high-power angle grinders, suitable for heavy-duty on-site work. Cutting discs sized 305–405mm are used with stationary cutting machines, allowing for single-pass cuts on large structural steel and rails. When selecting a cutting disc, first check the tool model and match the size accordingly. Do not choose a cutting disc that is too large to fit, nor attempt to force a small cutting disc to cut through a large cross-section.
RPM – Speed Match Is a Safety Must
Every cutting disc is marked with a maximum safe rotational speed (RPM). The actual operating speed of the equipment must never exceed this limit; if the speed is too high, excessive centrifugal force can cause the disc to crack and fly apart. Speed limits are even stricter for large-diameter discs—for instance, a 355mm cutting disc typically should not exceed 4,400 RPM. Checking the label before use to ensure the equipment’s speed is below the rated limit is a crucial step for safety.
Material – Match the Abrasive to Your Steel
Brown fused alumina cutting discs offer the best value for carbon steel, while specialized zirconia or ceramic alumina cutting discs are required for stainless steel to prevent burning and chip adhesion. Rail steel demands dedicated rail-cutting discs with multi-layer reinforcement to withstand high hardness and heavy impact. Using the wrong material leads to issues ranging from low efficiency and short service life to workpiece burning or cutting disc shattering that causes injury. DOME uses color-coding based on material type, making identification clear at a glance and preventing mix-ups.
Bond – Hardness Tunes Life and Self‑Sharpening
The bond holds the abrasive grains together; if it is too hard, dull grains fail to shed, preventing effective cutting and causing heat buildup. If it is too soft, grains shed prematurely, resulting in a short service life. Since stainless steel has poor thermal conductivity, a slightly softer bond is preferred to allow dull grains to shed promptly, thereby maintaining constant sharpness. Conversely, because carbon steel dissipates heat well, a harder bond can be used, allowing for more complete utilization of the abrasive grains and a longer service life.
Grit – Fineness Determines Surface Finish
Grit size indicates the coarseness of the abrasive. Coarse grits (24#–36#) offer fast cutting and high efficiency, making them suitable for rough cuts and thick materials. Fine grits (46#–60#) provide smooth cuts and high precision, ideal for thin sheets and detailed work. Medium grits (30#–46#) are the most versatile choice for home DIY and general construction sites, balancing cutting speed with acceptable cut quality.
Application – Choose the Right Disc for Each Job
Use 2.5mm-thick cutting discs for rebar to minimize vibration. Use 1.0mm ultra-thin cutting discs for thin-walled tubing to prevent deformation. Use specialized zirconia-alumina cutting discs for stainless steel to avoid burn marks. When cutting angle iron, starting the cut at the sharp edge ensures a smoother process. Structural steel requires large-diameter cutting discs paired with a stationary cut-off machine. When cutting sheet metal, use a straightedge to guide the cut for greater precision. Match the cutting disc to the specific material; making do with the wrong cutting disc not only reduces efficiency but also poses safety risks.
Common Mistakes
Common mistakes include using carbon steel cutting discs on stainless steel—which causes blackening from heat and necessitates regrinding—and using ultra-thin cutting discs on rebar, where the ribs cause vibration that leads to shattering. Other errors involve mounting cutting discs without checking the RPM rating, resulting in failure due to overspeeding, or using cutting discs for grinding tasks, where lateral pressure causes them to crack. We see these mistakes every day—don’t make them yourself. Simply choose the right cutting disc, check the speed rating, and avoid applying lateral pressure; get these three things right, and you’ll ensure both safety and efficiency.
Professional Tips
Remember three key rules: match the cutting disc thickness to the workpiece thickness; select the right abrasive material for the job (brown fused alumina for carbon steel, zirconia alumina for stainless steel, and specialized discs for rail steel); and verify compatibility regarding arbor size and RPM ratings before installation. If you are unsure, just ask the manufacturer—DOME’s technical support team is always online to help you choose the perfect cutting disc. After all, using the right cutting disc for the right job is what matters most.
Metal Cutting Disc FAQ
1. What is the difference between a cutting disc and a grinding wheel?
Cutting discs are thin and designed for clean, precise cuts through metal. Grinding wheels are thicker and used for surface finishing and smoothing. Never use a grinding wheel for cutting or vice versa.
2. How long does a metal cutting disc last?
Lifespan depends on the material being cut, frequency of use, and proper handling. A well-maintained resin cutting disc can last several hours of continuous cutting. Heavy-duty applications like cutting thick steel beams will wear discs faster.
3. Can I use the same cutting disc for different metals?
Not recommended. Each disc is formulated for specific materials. Using a steel disc on aluminum can cause clogging, while using a general-purpose disc on stainless steel may cause burn marks or rapid wear.
4. Can a metal cutting disc cut aluminum?
Standard metal cutting discs are not ideal for aluminum—the soft metal tends to clog the abrasive grains. Use specialized non-ferrous metal discs with different bonding systems to prevent clogging and overheating.
5. Can you use a metal cutting disc on stone?
No. Stone and masonry require carbide or diamond cutting discs. Metal cutting discs are not durable enough for stone and will wear out or break quickly.
6. Do cutting discs have an expiry date?
Yes. The expiry date is printed on the metal ring of the disc. The resin bond can deteriorate over time, creating safety hazards if used beyond the expiration date.
7. What are the signs that a cutting disc needs to be replaced?
Reduced cutting performance, excessive edge wear, visible cracks, chips, or unusual vibration during operation are all signs it’s time to replace the disc.
8. Thin vs. thick cutting disc – which one should I choose?
Thin discs (1.0–1.6 mm) cut faster, generate less heat, and produce cleaner edges—ideal for sheet metal and stainless steel. Thick discs (2.0 mm and above) last longer and handle heavy-duty jobs like rebar and structural steel.
9. How do I know which RPM rating my cutting disc needs?
Always check your angle grinder’s maximum RPM and match it to the disc’s rated speed. If the disc is not rated for your grinder’s speed, it could shatter during operation. The RPM rating is printed on every disc.
10. What are resin cutting discs made of?
Resin cutting discs are made by bonding abrasive grains—typically aluminum oxide or silicon carbide—with a synthetic resin binder, reinforced with fiberglass mesh for strength and safety. This combination provides both flexibility and durability for high-speed metal cutting.
11. How long does a cutting disc last?
It depends on what you’re cutting and how you use it – a 2.5mm cutting disc on rebar might last 200 cuts, while a 1.0mm cutting disc on stainless might only do 50; thicker discs last longer, but the real answer is watch the wear line – when it reaches the flange, replace it, and never force a worn disc because that’s when they break.
12. Can I cut stainless steel?
Yes, but you need a stainless steel specific disc with zirconia alumina abrasive and a softer resin bond – standard carbon steel discs will burn the material, turn edges blue-black, and wear out fast; use 1.0mm or 1.2mm thickness, keep the RPM high, and let the disc do the work without pushing hard.
13. Can I cut aluminum?
Yes, but aluminum is soft and gummy – it clogs regular cutting discs instantly; you need a cutting disc with a special lubricant additive to prevent loading, use coarse grit and keep the speed moderate; never use the same cutting disc for steel and aluminum because steel particles embed in the disc and cause contamination.
14. What is T41?
T41 is the European standard type designation for flat cutting discs with no recess – the most common cutting disc shape used on angle grinders for general metal cutting; it means the cutting disc is flat across its entire surface, mounts directly between two flanges, and is designed for straight cutting, not grinding or side loading.
15. What is T42?
T42 is the European standard type designation for depressed center cutting discs – also known as raised hub discs – where the center is recessed to allow the disc to reach into corners and tight spaces; the recess also gives you a better cutting angle and makes the disc less likely to bind in deep cuts, common in pipeline and structural steel work.
16. What grit?
Grit numbers tell you how coarse or fine the abrasive is – 24# to 36# is coarse, cuts fast and rough, for thick material and heavy work; 46# to 60# is fine, gives smooth clean edges, for thin sheets and precision; for general purpose, 30# to 46# is the sweet spot – fast enough and smooth enough for most jobs.
17. How to store cutting discs?
Store them flat, not on edge, in a cool dry place away from direct sunlight and moisture – humidity and UV light can degrade the resin bond over time; keep them off concrete floors because moisture wicks up, and never stack heavy objects on top of them – that causes hidden cracks that can shatter when spinning.
18. Can cutting discs expire?
Yes – resin bonded cutting discs have a shelf life of about three years from the date of manufacture if stored properly; after that, the resin can degrade, especially in heat or humidity, reducing bond strength and increasing the risk of breakage; always check the manufacturing date on the label and avoid using old or damaged cutting discs.
19. What RPM should I use?
The maximum safe RPM is printed on every cutting disc – never exceed it; for 115mm cutting discs, that’s usually 13,300 RPM; for 230mm cutting discs, it’s typically 6,600 RPM; for 355mm large cutting discs, it’s around 4,400 – always check your grinder’s speed and make sure it’s lower than the disc’s rating.
20. Can I use a grinding wheel to cut?
No – never use a grinding wheel for cutting; grinding wheels are thicker and designed for side loads, while cutting discs are thin and made for edge cutting only – using a grinding wheel for cutting forces side pressure where it’s not designed, creating dangerous stress and high risk of breakage; use the right tool for the job.
Related Products
Cutting Disc for Stainless Steel
Specially designed for difficult-to-cut stainless steels such as 304 and 316, this product features zirconia alumina abrasive and a high-temperature resistant resin formula. It delivers a clean, silvery-white cut surface free from burn marks and chip adhesion. It is the preferred choice for kitchenware, food processing machinery, and decorative projects. Factory-direct from DOME, it offers consistent quality and a long service life.
Grinding Wheel
Designed specifically for grinding metal surfaces, dressing welds, and removing burrs, this product features a high-quality resin bond and fiberglass reinforcement; it offers high grinding efficiency, resists breakage, and is compatible with various angle grinders, making it an essential tool for post-welding processing and surface finishing.
Flap Disc
Combining grinding and polishing functions, this tool features multiple layers of abrasive cloth flaps arranged in a fan-like pattern; as the flaps wear down during use, fresh abrasive grains are continuously exposed, ensuring a long service life and excellent surface finish. It is suitable for rust removal, polishing, and fine finishing of metal surfaces, offering high cost-effectiveness through its versatile, multi-purpose design.
Ceramic Grinding Disc
The ceramic grinding disc utilizes high-hardness ceramic abrasive grains, offering exceptional self-sharpening capabilities and heat dissipation. Specifically designed for the efficient grinding of difficult-to-machine materials—such as stainless steel and heat-resistant alloys—it delivers high material removal rates and a long service life while minimizing the risk of burning the workpiece.
Related Articles
- Choose the right cutting wheels for angle grinder
- The Ultimate Guide to Cutting Discs for Rotary Tools
Online Message
Minimum Order Quantity: 5,000 Pcs, 10 Pcs Free Samples.
Contact Us For More Information!
Tel/WhatsApp
+86 18796960868
DomeGrinding@hotmail.com
Address
Zhenglu Garden Industrial Park, Tianning District, Changzhou City, Jiangsu Province
Why Global Buyers Choose DOME
Factory data
| Category | Details |
|---|---|
| Workshop Area | 20,000 m² |
| Employees | 100+ |
| Monthly Capacity | Over 1.5 million pieces |
| Export Countries | 60+ |
| OEM Experience | 26 Years |
| Production Lines | 60 |
| Certifications | MPA/ISO9001/EN12413/ISO14001/BSCI |
| Quality Inspection | RPM Test/Burst Test/Attenuation test/Balance Test/Packing Inspection |
Factory View
The following are actual photos of the factory, laboratory, warehouse, and the loading of metal cutting discs into containers.
Factory and Laboratory
Warehousing and Container Loading
Major Export Markets
As a manufacturer with 80% of our products exported worldwide, we understand global quality and compliance standards firsthand. We have built our reputation on reliably serving international markets. Choose Dome Leverage our global export expertise to develop your custom abrasive solutions with confidence.
Latin America
Mainstream Models:
115×1.0x22.2mm
115×3.0x22.2mm
115×6.0x22.2mm
180×1.6×22.2mm
230×2.0x22.2mm
355×3.0x25.4mm
Europe
Mainstream Models:
115×1.0x22.2mm
125×1.0x22.2mm
125×6.0x22.2mm
150×1.6×22.2mm
180×1.2×22.2mm
230×2.0x22.2mm
Africa
Mainstream Models:
115×1.0x22.2mm
180×6.0x22.2mm
230×2.0x22.2mm
Asia
Mainstream Models:
100×6.0x16mm
107×1.0x16mm
355×2.5×25.4mm
355×3.0x25.4mm