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Galvalume Steel Coil

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Galvalume steel coil Zinc aluminium coil Galvalume coils Zinc-Aluminum steel coil Pre-Painted Aluminum Zinc Plated Steel Coil Galvalume roofing coil Aluzinc Steel Coil

Product Description

Galvanized steel coil (CL for short) is a metal coil made of cold rolled steel as a base material to form a coating at a temperature of approximately 600°C. The surface coating is mainly composed of 55% aluminum, 43.4% zinc and 1.6% silicon. The unique "aluminum-iron-silicon-zinc" composite structure combines the physical barrier protection and durability of aluminum with the electrochemical anti-corrosion properties of zinc, and has better corrosion resistance and service life than traditional galvanized steel coils (GI).

Galvalume Steel Coil Application - Shineyond Group

Galvalume Steel Coil Specification

Material	Aluminium-zinc alloy
Standard	ASTM A653/A653M-99, ASTM A90/A90M, ASTM D2092, JIS SGCC, etc
Grade	DC51D AZ、DC52D AZ DC53D AZ、DC54D AZ、DC56D AZ、S250GD AZ、S350GD AZ、S550GD AZ
Thickness	0.12-2.0mm
Width	700-1250mm
Zinc Layer	30-200g/㎡
Inner Diameter	508/610mm
Coil Weight	3-6tons or according to customer requirements
Surface Treatment	oiled, passivated or chrome-free passivated, passivated + oiled
MOQ	None
Delivery Time	In stock
Package	Standard export package

Galvalume Steel Coil Packaging - Shineyond Group

Galvalume Steel Coil Production Process

1. Pretreatment

After the steel coil is uncoiled, it is placed on a special machine for pretreatment, mainly to remove oil, rust and other operations to ensure that there are no impurities on the surface of the steel coil, which is convenient for subsequent processing.

2. Surface treatment

The purpose of surface treatment is to make the surface of the steel coil better adsorption of the coating and improve the adhesion. Physical methods mainly enhance surface roughness through mechanical grinding, while chemical methods improve the surface condition of steel coils through pickling, phosphating and other methods.

3. Aluminum zinc plating

After treating the surface, the aluminum-zinc plating process can be carried out. The steel coil is immersed in an electroplating solution containing aluminum, zinc and other metal ions containing oil, and deposited on the surface of the steel coil through a chemical reaction to form a uniform aluminum-zinc electroplating layer.

4. Painting

The final process in the production of galvanized steel coils is painting. A layer of baking paint is formed on the surface to protect the substrate and give the board color and beauty, improving adhesion and corrosion resistance. It mainly includes spraying, brushing, rolling coating, roll coating, etc., and the corresponding coating method can be selected according to the needs.

Galvalume Steel Coil Use

Roofing and Wall Panels: Commonly used in residential, commercial, and industrial buildings for its long service life and attractive appearance.

Structural Decking: Provides strong, corrosion-resistant support for floors and roofs.

Appliance Manufacturing: Used in the outer panels of refrigerators, washing machines, and ovens.

Automotive Components: Applied in car body parts, mufflers, and heat shields for improved resistance to rust.

Electrical and Lighting Equipment: Suitable for cable trays, enclosures, and lighting fixtures.

Agricultural and Marine Structures: Used in greenhouses, silos, barns, and coastal buildings due to its superior resistance to moisture and salt corrosion.

Galvalume Steel Coil Application - Shineyond Group