... ASTMA653,7) Grade of galvanized steel coil: SGCC (DX51D+Z), SGCD (DX52D+Z),8) Surface finish of galvanized steel coil: Normal spangle ... , large spangle, small spangle, matt surface,9) Elongation: 16-33%, ... Steel base,13) Packing: Standard export14) Applications: C-CHANNEL, Z-CHANNEL, Welded Pipe guard bar of expressway, etc.15) Special ...