Galvanized Steel Coil

Classification of Galvanized Steel Coil

three kind of coating: galvanized(Z), galvalum(ZA), galvanized aluminum magnesium (ZAM); Galvanized coil have three kind of spangle: regular spangle, mini spangle and spangle-free due to different surface processes.

hot-dip galvanized & galvalum steel coil

parameter (SGCC)
Standard grade	DX51D~DX57D+Z / +AZ ; （DX51D=SGCC=CS)
Width	600mm to 1500mm
Steel Thickness	0.125mm to 3.5mm
Coating mass	Z 20 g/㎡ to Z 275g/㎡ or ZA 20 g/㎡ to ZA 275 g/㎡
Coil weight	3 tons to 6 tons
Coil ID	508mm or 610mm
Surface treatment	Normal passivation; Enviromental Passivation,
surface structure	Regular Spangle, small Spangle, polished Spangle, Zero Spangle

QUALITY INSPECTION:

zinc thinckness test

yeild strength test

hardness test

Each coil will be inspected after finished, a series of tests will be carried out, such as
1) Zinc coating test;
2) mechanical properties testing (including tensile strength, yield strength and elongation)
3) Hardness test

application of galvanized coil