Galvalume Sheet

Galvanized sheet is a type of anti-corrosion steel with a surface treated by galvanization. It is divided into two major categories: hot-dip galvanized sheet (GI) and electro-galvanized sheet (EG). Common grades include DX51D+Z, SGCC, SGCD, ST01Z, ST02Z, etc. The specifications cover galvanized coil sheets and galvanized plates with thickness ranging from 0.3mm to 3.0mm and width ranging from 600mm to 1500mm.

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1. How to get samples to check the quality? How long can I get the samples?
After the price is confirmed, samples can be provided for your evaluation. After confirming the sample details, the samples will be ready for delivery within 3-7 days, and sent to you by courier, and arrive within 3-5 days.
2.Do you provide samples ? is it free or extra ?
Answer:The sample could can provide for customer with free,but the courier freight will be covered by customer account.
3. Do you accept the third party inspection?
Answer: Yes absolutely we accept.
4.Can you accept customization?
Answer:Yes. If you have special requirements on products or packages, we can do customization for you.
5.How do you control the quality?
Answer:We have professional inspectors to analyze chemical composition of raw materials and test the finished products strictly according to standard stipulated in the contract. In this process, Internal and external surfaces, two ends appearance, bending degree, fixed length, outer diameter and wall thickness dimension etc will be checked one by one. You can be assured that all the products you get from us are reliable.

Galvalume Sheet (Aluminum-Zinc Coated Steel Sheet / Aluminum-Zinc Coated Sheet) is a steel product featuring an alloy coating composed of aluminum (Al), zinc (Zn), and a small amount of silicon (Si) applied to the steel surface (typical composition: 55% aluminum, 43.5% zinc, 1.5% silicon). It combines the corrosion resistance of galvanized steel with the heat resistance of aluminum-coated steel.

product name	Galvanized steel sheets/Galvalume steel sheet
Thickness	0.13mm-5.0mm
Width	600mm-1500mm,762mm,914mm,1000mm,1200mm,1219mm,1250mm
zinc coating	40g,60g, 80g, 90,100g, 120g, 140g,180g, 200g, 250g, 275g and so on.
Standard	ASTM, AISI, DIN, GB
Material	SGCC,DC51D,DX51D,DX52D,SGCD,Q195,Q235,SGHC,DX54D, S350GD, S450GD,
Spangle	zero spangle,regular spangle or normal spangle
surface treatment	chromated and oiled, chromated and non-oiled
Packing	export standard.
Payment	T/T, L/C or DP
MOQ	1 ton
Quality	sft or hard quality

1.Common Grades and Standards

Standard System	Common Grades	Description
China GB/T	DX51D+AZ / DX52D+AZ / S250GD+AZ	The suffix changed from Z (galvanized) to AZ (aluminum-zinc coated) for aluminum-zinc alloy coated products.
Europe EN	DX51D+AZ / S350GD+AZ	Similar to the Chinese national standard, widely used in construction and manufacturing.
US ASTM	A792 CS / FS / SS	CS (Commercial Grade), FS (Forming Grade), SS (Structural Grade).

2.Coating and Performance

Coating Weight:

Common types include AZ50, AZ70, AZ100, AZ150, AZ200, etc.

(Unit: g/m², total coating weight on both sides).

The larger the number, the thicker the coating and the longer the corrosion resistance.

Coating Structure:

Composed of an outer aluminum-rich layer and an intermediate zinc-rich layer, combining the corrosion resistance of aluminum and the sacrificial protection of zinc.

Surface Treatment:

Usually treated with fingerprint-resistant or passivation treatment to improve corrosion resistance and surface quality.