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Hot Dip Galvanized Coil

Hot dip galvanized coil is a zinc-coated steel product offering excellent corrosion resistance, durability, and formability. Widely used in construction, automotive, and industrial applications, it ensures long-term performance, meeting the high-quality standards required by B2B customers.

PRODUCT DISPLAY

Hot Dip Galvanized Coil Description

Hot dip galvanized coil is a high-quality steel product coated with a protective layer of zinc through a continuous hot-dip process. This coating enhances corrosion resistance, ensuring durability and long-term performance in various environments. Widely used in construction, automotive, home appliances, and industrial manufacturing, it provides excellent strength, formability, and weldability. The galvanized surface offers superior adhesion for painting or further processing, meeting diverse B2B requirements. Manufactured according to international standards, hot dip galvanized coils deliver cost-effective and reliable solutions for manufacturers and contractors seeking high-performance steel materials with enhanced protection against rust and environmental exposure.
The production process of hot galvanizing is as follows:
Mother material → degreasing → water washing → pickling → water washing → rinsing → flux solution → drying → hot galvanizing → cooling → inspection → packaging

Scope of Application

For a long time, hot-dip galvanizing process has been favored by people because of its low plating cost, excellent protection characteristics and beautiful appearance. It is widely used in automobile, construction, household appliances, chemical industry, machinery, petroleum, metallurgy, light industry, transportation, electric power, aviation and marine engineering and other fields.

Product Parameters

Product Name Hot Dip Galvanized Coil
Thickness 0.12mm-3.5mm
Width 600mm-1500mm
Length 508mm/610mm, Support Customization
Standard AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc.
Zinc Layer Hot Galvanizing: 60-275g/m²
Pre-galvanized: 80-275g/m²

Chemical Composition

Standard Grade C Si Mn P S Ti
Forcold Forming

Chinese Standard

DX51D+Z 0.12 0.50 0.60 0.100 0.045 0.30
DX52D+Z 0.12 0.50 0.60 0.100 0.045 0.30
DX53D+Z 0.12 0.50 0.60 0.100 0.045 0.30
DX54D+Z 0.12 0.50 0.60 0.100 0.045 0.30
DX56D+Z 0.12 0.50 0.60 0.100 0.045 0.30
DX57D+Z 0.12 0.50 0.60 0.100 0.045 0.30
Forcold Forming

Japanese Standard

SGCC 0.15 0.50 0.80 0.050 0.030 0.025
SGCD1
SGCD2
0.12
0.10
0.50
0.50
0.60
0.45
0.040
0.030
0.030
0.030
0.025
0.025
SGCD3 0.08 0.50 0.45 0.030 0.030 0.025
SGCD4 0.06 0.50 0.45 0.030 0.030 0.025
For Structure

Japanese Standard

SGC340 0.25 0.50 1.70 0.200 0.035 0.025
SGC400
SGC440
0.25
0.25
0.50
0.50
1.70
2.00
0.200
0.200
0.035
0.035
0.150
0.150
SGC490 0.30 0.50 2.00 0.200 0.035 0.025
SGC510 0.30 0.50 2.50 0.200 0.035 0.025
For Structure

AISI Standard

S220GD+Z 0.20 0.60 0.70 0.100 0.045 0.025
S250GD+Z 0.20 0.60 0.70 0.100 0.045 0.025
S280GD+Z 0.20 0.60 0.70 0.100 0.045 0.025
S320GD+Z 0.20 0.60 0.70 0.100 0.045 0.025
S350GD+Z 0.20 0.60 0.70 0.100 0.045 0.150
S550GD+Z 0.20 0.60 0.70 0.100 0.045 0.150

Mechanical Properties

Grade Yield Strength MPa≥ Tensile Strength MPa≥ Elongation A%≥
DX51D Z/ZM/AZ/AM 240-380 270-500 22
DX52D Z/ZM/AZ/AM 140-300 270-420 26
DX53D Z/ZM/AZ/AM 140-260 270-380 30
DX54D Z/ZM/AZ/AM 120-220 260-350 36
S220GD Z/ZM/AM 220 300 20
S250GD Z/ZM/AZ/AM 250 330 19
S280GD Z/ZM/AM 280 360 18
S300GD A/AM 300 380 18
S320GD Z/ZM/AM 320 390 17
S350GD Z/ZM/AZ/AM 350 420 16
S450GD A/AM 450 480 15
S550GD Z/ZM/AZ/AM 550 550
Use of The Environment Recommended Zinc Thickness
Indoor Use Z10 or Z12 (100g/㎡or 120g/㎡)
Suburbs Z20 and Painting (200g/㎡)
Urban or Industrial Area Z27 (270g/㎡) or G90 (US Standard) and painted
Coastal Area Thicker than Z27 (270g/㎡) or G90 (US Standard) and painted
Punch or Deep Drawing Application Thicker than Z27 (270grams/㎡) or G90 (US Standard) avoid coating peeling after stamping
Surface Treatment Type Code Features
Chromic Acid Treatment C Good corrosion resistance, suitable for bare state
Chromic Acid Treatment+Oiling S Good corrosion resistance
Phosphoric Acid Treatment (Including Sealing Treatment) P Have a certain corrosion resistance, good paint performance
Phosphoric Acid Treatment (Including Sealing Treatment)+Oiling Q Has a certain corrosion resistance, good paint performance, prevent rust during transportation and storage
Phosphoric Acid Treatment (Excluding Sealing Treatment) T Have a certain corrosion resistance, good paint performance
Phosphoric Acid Treatment (Excluding Sealing Treatment)+Oiling V Has a certain corrosion resistance, good paint performance, and prevent rust
Oiling O Prevent rust during transportation and storage
No Treatment M Suitable for immediate painting

Material Comparison

Chinese Standard Japan Standard European Standard
DX51D Z/DC51D Z (CR) SGCC DX51D Z
DX52D Z/DC52D Z SGCD1 DX52D With
DX53D Z/DC53D Z/DX54D Z/DC54D Z SGCD2/SGCD3 DX53D Z/DX54D Z
S220/250/280/320/350/550GD Z SGC340/400/440/490/570 S220/250/280/320/350GD Z
DX51D Z/DD51D Z (HR) SGHC DX51D Z

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