Hot-dip galvanized steel plate and coil HX380LAD,HX380LAD+Z,HX380LAD+ZF,H380LAD,
H380LAD+ZF,H380LAD+Z is for extra deep drawing quality.After rolled,Chemical passivation for HX380LAD,HX380LAD+Z,HX380LAD+ZF,H380LAD,H380LAD+ZF,H380LAD+Z 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.Local discolouring as a result of this treatment is permissible and does not impair the quality for galvanized steel HX380LAD,HX380LAD+Z,HX380LAD+ZF,H380LAD,H380LAD+ZF,H380LAD+Z.

When orders for Hot-dip galvanized steel sheet and coil HX380LAD,HX380LAD+Z,
HX380LAD+ZF,H380LAD,H380LAD+ZF,H380LAD+Z,customers need inform us their request for steel plate surface quality.Such as As coated surface (A) which imperfections like small pits,variations in spangle size,dark spots,stripe marks and light passivation stains are permissible.Improved surface(B) which is obtained by skin passing.Best quality surface (C) which is also done skin passing,and the steel surface shall not impair the uniform appearance of a high-class paint finish.The other side shall have at least the characteristics of surface quality B.