CSB Galvanized Steel Coils
Product Name :CSB Galvanized Steel Coils
Thickness :0.12mm-3.5mm
Width : 600mm-1500mm
Zinc Layer: 40-400g/m²
Standard : AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc.
Low Maintenance, High Performance
Affordable Excellence
Swift Delivery
Professional After-Sales Support
Product Description:
The thickness specifications of CSB galvanized steel coil are diverse, and the thinner thickness is suitable for some products that are more sensitive to weight and cost and do not need to bear too much pressure, such as internal shielding covers of electronic equipment, small packaging boxes, etc. Thicker steel coils can be used to manufacture components that require a certain degree of strength and rigidity, such as purlins in building structures and shell frames for industrial equipment.
Full cold galvanizing process:
Chemical degreasing → hot water washing → water washing → electrolytic degreasing → water washing → acid washing → rust removal → water washing → electrogalvanizing process → water washing → passivation → hot water washing → drying → quality inspection → packaging and sales
Chemical Composition
Standard | Grade | C | Si | Mn | P | S | Ti |
Forcold FormingChinese 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 FormingJapanese Standard | SGCC | 0.15 | 0.50 | 0.80 | 0.050 | 0.030 | 0.025 |
SGCD1SGCD2 | 0.120.10 | 0.500.50 | 0.600.45 | 0.0400.030 | 0.0300.030 | 0.0250.025 | |
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 StructureJapanese Standard | SGC340 | 0.25 | 0.50 | 1.70 | 0.200 | 0.035 | 0.025 |
SGC400SGC440 | 0.250.25 | 0.500.50 | 1.702.00 | 0.2000.200 | 0.0350.035 | 0.1500.150 | |
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 StructureAISI 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 | Z40 or Z120(40g/㎡or 120g/㎡) |
Suburbs | Z200 and Painting (200g/㎡) |
Urban or Industrial Area | Z275 (275g/㎡) or G90 (US Standard) and painted |
Coastal Area | Thicker than Z275 (275g/㎡) or G90 (US Standard) and painted |
Punch or Deep Drawing Application | Thicker than Z275 (275 grams/㎡) 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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