570 Hot-dip galvanized steel coil sgc570 is for extra deep drawing quality.After rolled,Chemical passivation for sgc570 is chosed by customers,Chemical passivation protects the surface against humidity and reduces the risk of formation of white rust during transportation and storage in open yard.
SGC570 steel Coil/strip/sheet surface quality:
A (As coated surface), B (Improved surface),C (Best quality surface)
SGC570 steel Coil/strip/sheet surface treatment:
C (Chromate treatment),NC(Non Chromate treatment), O (oiling), X (unoiling) NP(Phosphating treatment of non chromate), P(Phosphated), M(Untreated)
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