Surface No.3
No.3 Brushed Stainless Steel Finish
No.3 is a relatively coarse directional abrasive finish used as a final industrial surface or as an intermediate step before finer polishing.
Appearance
- Clearly visible directional grain with a coarser texture and lower gloss than a typical No.4 finish.
Production route
- Start from suitable mill-finish sheet or coil
- Coarse abrasive belt polishing
- Cleaning
- Protective film where required
Typical uses
- Industrial panels
- Equipment backs and non-critical faces
- Intermediate polishing stages
- Heavy-use fabricated components
Purchase-order checks
- Abrasive or reference sample
- Grain direction
- One-side or two-side finish
- Later welding or forming
- Film and acceptance lighting
Protection and acceptance
- Define grit or approve a physical sample
- State grain direction and critical side
- Inspect cross scratches, belt lines and edge consistency
Common defects to control
- Uneven or interrupted grain
- Cross scratches
- Excessive edge rounding from polishing
Example purchase description
- 304 stainless sheet, 2.0 x 1219 x 2438 mm, No.3 one side to approved sample, grain along 2438 mm, protective film on the finished face.
Technical content updated: 2026-07-29
Organizational author: Tsingshan (Shandong) Iron & Steel Co., Ltd..Review method, status and limitations.
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