7 Inch Cutting Disc in Bulk — 178×2.0×22.2mm T41A Wholesale & OEM Manufacturer

Qing Yang® manufactures 7 inch cutting discs (178mm) for hardware distributors, industrial tool importers, and OEM buyers requiring consistent quality at container-load scale. The standard wholesale specification is 178×2.0×22.2mm T41A — a flat-profile thin cut-off wheel engineered for clean, low-heat cuts on mild steel, stainless steel (inox), and thin-wall steel tube using a 7 inch angle grinder.

At 2.0mm thickness, the kerf width and heat generation are measurably lower than standard 2.5mm discs, making this SKU the preferred choice for buyers supplying fabrication shops, HVAC contractors, and stainless steel tube distributors who prioritize cut quality over sheer material removal rate.

Product Advantages

• 2.0mm T41 flat profile: Flush grinding surface with no raised hub — correct wheel type for 7 inch angle grinders that do not accept depressed-center (T42) mounting geometry. Reduces kerf width and post-cut cleanup compared to 2.5mm or 3.0mm alternatives.
• Double fiberglass mesh reinforcement: Two-layer woven glass fiber integrated into the resin bond matrix delivers the lateral rigidity required for straight cuts on thin-wall stainless steel tube without disc deflection at rated RPM.
• Aluminum oxide abrasive formula (A-grade): Optimized grain blend for metal and inox cutting. Consistent cut-to-cut performance across carbon steel, stainless steel, and mild steel profiles.
• 22.2mm (7/8 inch) universal arbor: Compatible with all major 7 inch angle grinder brands accepting 178mm diameter wheels with standard 22.2mm bore.
• Max 8,500 RPM / 80 m/s: Meets EN 12413 burst speed requirement (tested at 1.5× rated speed). MPA Hannover and ISO 9001 certified.

​Material applicability analysis table​

​Industrial application scenarios​

The 7 inch 178mm cutting disc occupies a distinct niche in the angle grinder size range: larger cutting capacity than a 4.5 inch (115mm) disc, without the bulk and mass of a 9 inch (230mm) wheel. This makes it the go-to diameter for:

• Thin-wall stainless steel tube fabrication: 7 inch disc provides sufficient cutting depth for tubes up to 40mm outer diameter in a single pass, with the 2.0mm profile minimizing heat discolouration on inox — a critical quality requirement for food-grade and architectural stainless applications.
• Structural steel angle and flat bar: Fast cross-cutting of 50×50mm angle iron and flat bar up to 6mm thickness. The 178mm diameter delivers more cutting arc contact than smaller discs without requiring a heavy-duty 9 inch machine.
• HVAC ductwork and light steel framing: The combination of 7 inch diameter and 2.0mm ultra-thin profile is standard equipment for sheet metal contractors cutting galvanised steel duct sections and light-gauge steel framing profiles.
• Pipe and tube cutting for plumbing contractors: 178mm cutting depth handles Schedule 40 and Schedule 80 carbon steel pipe up to 2 inch nominal bore.

Note: This T41A flat disc is engineered for metal and stainless steel only. For
stone or concrete cutting, a diamond blade or silicon carbide bond disc is required.

​Wholesale & OEM Supply

Qing Yang® supplies 7 inch cutting discs direct from the manufacturing facility in Zhejiang, China, with no intermediary markup. Supply terms for B2B buyers:

Sample policy: Pre-production samples available for cut-test verification before full container commitment.

MOQ: 100,000 pieces for standard private label orders including custom blotter printing and branded export carton. Mixed-diameter container loads (combining 178mm, 115mm, and 125mm SKUs) are accepted to reduce per-SKU
minimum pressure for distributors.

Custom packaging: Full OEM branding — your logo on the disc blotter, inner retail box design, and master carton with your barcode and shipping marks.

Formula customisation: Abrasive grain ratio and resin bond hardness can be adjusted for specific regional markets. Common requests include softer bonds for harder stainless grades and denser grain for extended disc life in high-throughput production environments.

Trade terms: FOB Ningbo / FOB Shanghai. 20ft and 40ft FCL. Standard production lead time 15–25 days after order confirmation.

Wholesale & OEM Supply

Qing Yang® supplies 7 inch cutting discs direct from the manufacturing facility in Zhejiang, China, with no intermediary markup. Supply terms for B2B buyers:

• MOQ: 100,000 pieces for standard private label orders including custom blotter printing and branded export carton. Mixed-diameter container loads (combining 178mm, 115mm, and 125mm SKUs) are accepted to reduce per-SKU minimum pressure for distributors.
• Custom packaging: Full OEM branding — your logo on the disc blotter, inner retail box design, and master carton with your barcode and shipping marks.
• Formula customisation: Abrasive grain ratio and resin bond hardness can be adjusted for specific regional markets. Common requests include softer bonds for harder stainless grades and denser grain for extended disc life in high-throughput production environments.
• Trade terms: FOB Ningbo / FOB Shanghai. 20ft and 40ft FCL. Standard production lead time 15–25 days after order confirmation.
• Sample policy: Pre-production samples available for cut-test verification before full container commitment.

Export Markets

7 inch cutting discs are one of the highest-volume diameter SKUs in European and Middle Eastern hardware distribution. Key destination markets for Qing Yang® 178mm wholesale discs include:

Frequently Asked Questions (OEM & Wholesale)