Flap Discs
One-step grinding & finishing — aluminium oxide and zirconium alumina
Application
- Steel
Carbon steel · structural steel · weld seams - Stainless Steel
INOX 304/316 · alloys
Aluminium Oxide Flap Disc
BestsellerVersatile general-purpose finishing & light grinding
Cost-efficient A/O flap discs with layered abrasive flaps for smooth surface blending, deburring and edge finishing across most metals. The self-dressing grain keeps cutting consistent as the disc wears.
Specification Table
Flap Discs — Aluminium Oxide Flap Disc
| Size (mm) | Thickness | Bore | Grit | Shape | Max RPM | Speed |
|---|---|---|---|---|---|---|
| 115 mm (4.5") | 6 mm | 22.23 mm | 40 — 120 | T27 / T29 | 13300 | 80 m/s |
| 125 mm (5") | 6 mm | 22.23 mm | 40 — 120 | T27 / T29 | 12200 | 80 m/s |
| 180 mm (7") | 6 mm | 22.23 mm | 40 — 120 | T27 / T29 | 8500 | 80 m/s |
| 230 mm (9") | 6 mm | 22.23 mm | 40 — 120 | T27 / T29 | 6600 | 80 m/s |
Application
- Stainless Steel
INOX 304/316 · alloys - Steel
Carbon steel · structural steel · weld seams
Zirconium Flap Disc
PremiumHigh-performance for stainless steel & tough alloys
Zirconium alumina grain (ZA) delivers up to 3× longer life and faster cut on INOX and heat-sensitive alloys. Runs cooler to prevent surface discoloration while holding an aggressive edge.
Specification Table
Flap Discs — Zirconium Flap Disc
| Size (mm) | Thickness | Bore | Grit | Shape | Max RPM | Speed |
|---|---|---|---|---|---|---|
| 115 mm (4.5") | 6 mm | 22.23 mm | 40 — 120 | T27 / T29 | 13300 | 80 m/s |
| 125 mm (5") | 6 mm | 22.23 mm | 40 — 120 | T27 / T29 | 12200 | 80 m/s |
| 180 mm (7") | 6 mm | 22.23 mm | 40 — 120 | T27 / T29 | 8500 | 80 m/s |
| 230 mm (9") | 6 mm | 22.23 mm | 40 — 120 | T27 / T29 | 6600 | 80 m/s |
Specifications above reflect our standard stock program. Exact grit, bore, thickness and printed labels can be customized for OEM orders. Contact us for your working conditions.
Flap Disc Buying Guide
Match grit, grain type and disc profile to your job for the right balance of cut, finish and disc life.
- Grit & finish: 36–50 grit for fast stock removal and rough shaping; 60–80 for general blending; 120+ for a fine, near-mirror finish.
- Grain type: aluminium oxide (A/O) for most carbon steel at the best cost per disc; zirconium alumina (ZA) for stainless and heat-sensitive alloys with up to 3× longer life.
- T29 vs T27: T29 depressed-centre discs cover a wider area and are preferred by fabricators for heavy work; T27 flat discs suit flat surfaces, backstands and finishing.
- Backing: fibreglass backing for strength; aluminium backing for higher stiffness and precision work.
- Flap disc vs grinding wheel: for one-step grind + finish choose a flap disc; for fast aggressive stock removal of large welds use a grinding wheel first.
Build your Flap Discs assortment with us
Share your size mix and monthly quantity for a factory-direct quotation with the best lead time.
FAQ
Frequently Asked Questions
Do you offer OEM / private label abrasive discs?+
Yes. We produce discs with your brand, custom size, colour and packaging. MOQ starts from a single piece, so you can test before committing.
What is your minimum order quantity (MOQ)?+
For standard stock sizes MOQ is very low — from 1 piece for samples and trial orders. For OEM or custom runs we confirm exact quantities by size.
What are your shipping terms?+
FOB Tianjin or CIF worldwide. We also quote CIF and DAP for larger volumes. Sea freight is the most cost-effective for full containers; air or courier for samples.
How do you control quality?+
Every batch is checked before leaving our factory — incoming raw-material inspection, in-line dimensional and weight checks during forming, and physical burst & max-speed tests on finished discs.