... of materials.Surface treatment of hot-dip galvanized sheet(coil)L Chromic acid passivationY BastingLY Chromic acid passivation and ... bendingProcessing propertyYield stressTensile strengthTensile stretch %180o cold bendingCommon PV—270-500—d=0, in good condition, non-dezincing. Deep ... , in good condition, non-dezincing.Mechanical articulation JY—270-500—d=0, in good condition, non-dezincing.Ultra-deep ...