Gnee Steel (tianjin) Co., Ltd
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Galvalume Steel Coil Galvanized Surface Selection DX51D DX52D S220GD S250GD

Sep 17, 2025

Galvalume Steel Coil

 

Galvanized zinc coil is based on cold-rolled steel plate, which is solidified by 55% aluminum, 43.4 zinc and 1.6 silicon at 600 ℃. It combines the physical protection and high durability of aluminum with the electrochemical protection of zinc. Also known as aluminized zinc steel coil.

 

Product Name

Galvalume Steel Coil

Thickness

0.12mm-6.00mm

Width

600mm-1500mm

Length

1m-12m, Support Customization

Standard

AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc.

Thickness of Aluminum Zinc Coating

30-185g/m²

Content of Al-Zn Coating

Al: 55%, Zn: 43.5%, Si: 1.5%

 

  • Galvanized Surface Selection

 

Galvanized Surface Selection DX51D DX52D S220GD S250GD

 

Type of Coating

Recommended Coating Weight

Aluminum-zinc Alloy

30/40/50/60/75/90/100/150

A: Coating quality50g/㎡,approximately equal to the coating thickness13.3pm

 

Project

Classification

Symbol

Type of Coating

Aluminum-zinc Alloy

AZ

Surface Finish

Conventional Sequins

R

Minimize Sequins

M

Skin Through

S

Surface Treatment

Chromate Passivation

c

Non-chromate Passivation

C5

Chromate Passivationoiling

CO

Chromium-free Passivationoiling

CO5

Anti-fingerprint

N

Chromate-free/Anti-fingerprint

N5

No chromate high weather resistance fingerprint

NW

Oil filling

0

No treatment

U

 

  • Material Comparison

Chinese Standard

European Standards

American Standard

Japanese Standard

DC51D+AZ

DX51D+AZ

CS Type B, Type C

SGLCC

DC52D+AZ

DX52D+AZ

DS

SGLCD

S250GD+AZ

S250GD+AZ

255

-

S300GD+AZ

-

-

-

S350GD+AZ

S350GD+AZ

345

Class1 SGLC490

S550GD+AZ

S550GD+AZ

550

SGLC570

 

The company adheres to the tenet of "first-class quality and service creation" and has established long-term and stable partnerships with many well-known companies. Among domestic and foreign manufacturers, it has carefully gathered the achievements made by the brand products of each manufacturer, complemented resources, met the different needs of the market, assisted manufacturers to improve their competitiveness, and become the best partner for all customers.

 

Galvanized Surface Selection DX51D DX52D S220GD S250GD