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Galvanized Color Coated Plate Sheet Corrugated Steel Gi Iron Roofing 275g / ㎡

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Galvanized Color Coated Plate Sheet Corrugated Steel Gi Iron Roofing 275g / ㎡

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Brand Name :	TISCO
Model Number :	SGCC,SGCH,G550,DX51D,DX52D,DX53D,S280GD,S350GD
Certification :	SGS ISO BV
Price :	Negotiable
Payment Terms :	L/C, T/T, Western Union, MoneyGram
Supply Ability :	2000 tons per month
Delivery Time :	7-15 days

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Galvanized Color Coated Plate Sheet Corrugated Steel Gi Iron Roofing 275g / ㎡

— Galvanized Roofing Sheet Metal —

Types of Galvanized Iron Sheet

There are different types of GI sheets. For example, due to the different galvanizing methods, there are hot-dip galvanized sheets and electro-galvanized steel sheets.

Hot dipped galvanized sheet is mainly produced by the continuous galvanizing process. That is, the zinc coating is applied by continuously immersing the steel coil in the molten zinc bath at temperatures of 450 degrees. This process provides a thick zinc coating that freezes into crystallized zinc spangles. The thick zinc coating offers full protection for the base steel. That’s why its service life is more than 30 years under normal conditions. By the way, the zinc layer at Wanzhi Steel is Z40-275 g/m2.

Electro-galvanized sheet often uses cold rolled steel as the base metal. Then the zinc coating of the electro-galvanized sheet is applied by electro-deposition. The continuous electrolytic coating process offers a thin but very uniform zinc coating. So the electro-galvanized steel has a smoother appearance. However, its corrosion resistance is not as good as that of hot-dip galvanized steel.

Steel Grade	SPCC , SPGC
Standard	JIS G -3312,ASTM A -755 ,EN -10169, IS -14246,G300-G550
Zinc Coating	Z30-Z140 AZ20-AZ160
Color Coating	7-30um
Width	750MM 800MM 950MM 1250MM 1500MM
Wall Thickness	0.6MM-3MM
Spangle State	regular spangle, small spangle, big spangle, non-spangle
Surface Treatment	Chromate, Oil, Lacquer Seal, Phosphating, etc

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