Surface No.1
No.1 Hot-Rolled Stainless Steel Finish
No.1 is the heat-treated and pickled hot-rolled finish used on stainless plate and heavier coil where function, corrosion resistance and fabrication matter more than appearance.
Appearance
- Matte, non-uniform grey surface with the visual texture typical of descaled hot-rolled plate.
Production route
- Hot rolling
- Solution annealing
- Descaling and pickling
- Optional leveling or grinding
Typical uses
- Pressure equipment
- Chemical tanks
- Structural fabrication
- Heavy cut parts
Purchase-order checks
- Plate or coil route
- Thickness tolerance
- Flatness class
- Pickled surface acceptance
- Grinding or blasting after fabrication
Protection and acceptance
- Order bare, paper-interleaved or protected according to handling risk
- Define whether local conditioning or grinding is permitted
- Inspect remaining scale, pickling uniformity, pits and plate flatness to the governing standard
Common defects to control
- Residual scale or pickling shadow
- Local grinding marks
- Handling scratches and plate waviness
Example purchase description
- 316L stainless plate, ASTM A240/A480, 12 x 2000 x 6000 mm, No.1 finish, sheared edges, surface acceptance to the contract standard.
Technical content updated: 2026-07-29
Organizational author: Tsingshan (Shandong) Iron & Steel Co., Ltd..Review method, status and limitations.
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