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40 g/m2 Zinc coating Dipped Galvanized Corrugated Roofing Sheets AS 1397 G550 (HRB≥85) , ASTM A653 Grade SGCC,SGCH ,DX51D,Q195 Thickness 0.12- 1.2mm Width 762mm/680,670,660,655,650mm 9 waves 914mm/815...