Gnee Steel (tianjin) Co., Ltd
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Galvanized Steel Coil DX51D SGCC Hot Dipped Zinc Coated Steel Coil Supplier from China

Oct 23, 2025

Main advantages of galvanized steel coils

 

Aluzinc-coated steel is a new type of corrosion-resistant coated steel sheet, which is made of 55% aluminum, 43.4% zinc and 1.6% silicon solidified at a high temperature of 600℃. Its entire structure is composed of aluminum-iron-silicon-zinc, forming a dense quaternary crystal, thus forming a strong and effective anti-corrosion factor. Due to its excellent corrosion resistance and long life, it has been widely used in construction, home appliances, transportation and other fields.

 

  • Main advantages of galvanized steel coils

(1) Strong corrosion resistance

The corrosion resistance of galvanized steel coils is better than that of ordinary galvanized steel coils, especially in coastal areas or environments with heavy industrial pollution. Experimental data show that under the same environment, the service life of galvanized steel coils can reach 2 to 4 times that of ordinary galvanized steel coils.

(2) Good heat resistance

Aluzinc-coated steel coils can withstand temperatures of about 300℃, while ordinary galvanized steel coils are easily oxidized and fail at high temperatures. This feature makes it suitable for certain occasions that require high temperature resistance, such as chimneys, oven shells, etc.

(3) Beautiful surface

The surface of the galvanized steel coil has a unique silver-gray metallic luster, which is more beautiful than ordinary galvanized steel coils and is suitable for use in places with high aesthetic requirements such as building exterior walls and roofs.

 

  • Application fields of galvanized steel coils

(1) Construction industry

Aluminum-zinc steel coils are often used for building roofs, walls, awnings, etc. Its corrosion resistance and aesthetics make it one of the preferred modern building materials.

(2) Home appliance manufacturing

Some home appliance shells, such as refrigerators, washing machines, air conditioner outdoor units, etc., are made of galvanized steel coils to improve product durability.

(3) Automobile industry

Some automobile parts, such as exhaust pipe guards and fuel tank shells, use galvanized steel coils to improve corrosion resistance.

 

Galvanized Steel Coil DX51D SGCC

 

Galvalume 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 Steel Coils

 

Technical Standard EN10147, EN10142, DIN 17162, JIS G3302, ASTM A653
Steel Grade Dx51D, Dx52D, Dx53D, DX54D, S220GD, S250GD, S280GD, S350GD, S350GD, S550GD; SGCC, SGHC, SGCH, SGH340, SGH400, SGH440, SGH490, SGH540, SGCD1, SGCD2, SGCD3, SGC340, SGC340 , SGC490, SGC570; SQ CR22 (230), SQ CR22 (255), SQ CR40 (275), SQ CR50 (340), SQ CR80(550), CQ, FS, DDS, EDDS, SQ CR33 (230), SQ CR37 (255), SQCR40 (275), SQ CR50 (340), SQ CR80 (550); or Customer's Requirement
Type Coil/Sheet/Plate/Strip
Thickness 0.12-6.00mm,or customer's requirement
Width 600mm-1500mm, according to customer's requirement
Type of Coating Hot Dipped Galvanized Steel(HDGI)
Zinc Coating 30-275g/m2
Surface Treatment Passivation(C), Oiling(O), Lacquer sealing(L), Phosphating(P), Untreated(U)
Surface Structure Normal spangle coating(NS), minimized spangle coating(MS), spangle-free(FS)
Quality Approved by SGS,ISO
ID 508mm/610mm
Coil Weight 3-20 metric ton per coil
Package Water proof paper is inner packing,galvanized steel or coated steel sheet is outer packing , side guard plate,then wrapped by seven steel belt.or according to customer's requirement
Export market Europe, Africa, Central Asia, Southeast Asia, Middle East, South America, North America, etc