Sheet and strip, there are three basic rolling surface finish, they are expressed through the production process of sheet and strip Village.

No.1: After hot rolling, annealing, pickling and descaling. Treated steel surface is a dark surface, a little rough.

No.2D: N0.1 surface processing, is also a dark surface. After cold rolling, annealing, descaling, the final light rolling roll with the hair surface.

No.2B: This is the most commonly used in building applications, in addition to the annealing and descaling polishing roll last a mild cold-rolled, other craft and 2D, the surface is a little bit light, can be polished.

No.2B bright annealing: This is a reflective surface, after polishing roll rolling and final annealing in a controlled atmosphere. Bright annealed maintained its reflective surface, but does not produce the oxide.

Bright annealing process does not occur in the oxidation reaction, so no need to pickling and passivation.



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