DESCRIPTION OF GALVANIZED (GI) SHEETS & COILS:Galvanized steel have gone through a chemical process to keep it from according. The steel gets coated in layers of zinc because rust won't attack this protective metal. For countless outdoor, marine, or industrial applications, galvanized steel is an essential fabrication component.Specification of galvanized (GI) sheets&coils:1. Thickness: 0.18-1.5mm;2. Width: 50-914mm;3. Hardness: 380MPa-450MPa;4. Specification: 0.35*50, 0.4*45, 0.4*65, 0.4*68, etc.;5. Surface waxed and edges deburred;6. Standard: As per buyers' specifications among Q195-Q345B in the GB standard;7. Package: Inner is protect humidity-proof waw paper, medium is plastic film, outer is sackcloth or compound paper packing, or as per customer's requirements.StandardAISI, ASTM, BS, DIN, GB, JIS, etcGradeSGCC, DX51D, DX53D, DX54D, etcThickness0.14-2.5mmWidthless than 600mmInner Diameter508/610mmCoil Weight1.5-4.0TZinc Coating60g/m 2 -180g/m 2Spangle Stateregular spangle, small spangle, big spangle, non-spangleSurface TreatmentChromate, Oil, Lacquer Seal, Phosphating, etc