Galvalume steel sheet is a cold-rolled steel sheet as a base material and a galvalume steel sheet obtained by hot-dip aluminum-zinc alloy coating on both sides

Coatings produced by six hot plating processes

Hot dip galvanizing (GI) Electro galvanizing (EGI) Aluminum zinc plating (SGLC)

Color coated stainless steel surface discoloration, mainly due to the following reasons