Types of finishes
- No. 1; this is a dull and slightly rough surface, which is the starting finish on sheets of a hot rolled, tempered, etched and passivated process.
- No. 2D; this dull finish is superior to a No. 1 finish and is the starting finish on sheets of a cold rolled, tempered, etched and passivated process.
- No. 2B; this is a glossy finish on sheets, due to a cold rolled, polished, tempered, etched and passivated process.
- No. 2BA; this is a mirror-like finish with some imperfections. BA stands for Bright Annealed, which is made in a controlled atmosphere.
- No. 3 or No. 4; these finishes can be obtained with abrasive belts ranging from grit 120 or 180 to even 240 or 320. No. 3 and No. 4 are often used for escalators, elevators and architectural buildings for example.
- No. 5; a finish applied with non-woven abrasive.
- No. 6 or No. 7; a finish of which the surface is processed with grinding compounds. With no. 7 there are additional cotton mops, which are polish compounds.
- No. 8; a true mirror finish, produced on sheets with the use of discs. This process uses a mixture of abrasive compound and water to do the polishing.
- Non-directional finish; products with this type of finish can be put in every possible direction.
- Hairline finish; this finish has a long, continuous straight lines parallel to the length of the sheet metal.
- DUPLO finish; which is a finish with combination of first abrasive belt and then Scotch-Brite brush, and a great finish for the food processing industry.
- Microlon finish; applied with Scotch-Brite brushes or even Scotch-Brite belts.
