GI sheet zero spangle 1.Width: 600-1500mm 2.Thickness tolerance:+/-0.02mm ... galvanizing/ Electro galvanizing steel sheet/ GI sheet Product GI sheet zero spangle Standard DC01 ST02Z DC51D+Z SGCC Q195,Q235,SPCC ... rolled- galvanizedHot rolled-cold rolled-galvalume /Aluzinc SURFACETREATMENTMini/regular/big/zero spangle,Chromate treatment /chromate-free treatment /untreated unoile/oiled,TENSION ...