Hot Dip Galvanized Coil (GI/HDG) is made of high-quality cold rolled or hot rolled pickled steel as base material, processed through continuous hot-dip galvanizing technology. By forming a uniform and dense zinc layer on the steel surface, it achieves excellent corrosion resistance, rust prevention and aging resistance, as well as good formability, weldability, paintability and appearance. With smooth surface, uniform zinc coating and strong adhesion, it is widely used in building envelopes, home appliance shells, automotive parts, electrical cabinets, ventilation ducts, hardware products and other fields with high anti-corrosion requirements, making it one of the most widely used anti-corrosion steel products in industrial production and engineering construction.
PRODUCT ADVANTAGES
• Uniform and dense zinc layer, excellent anti-corrosion & long service life
• Smooth and flat surface, uniform color, good appearance for direct use
• Excellent formability, no zinc peeling or cracking during bending & stamping
• Good weldability and paintability, easy for post-processing
• Stable base material, high dimensional accuracy & flat shape
• Available with regular spangle, zero spangle, fingerprint resistant, passivated, oiled surface
• Custom processing: cutting, slitting, leveling available
• Compliant with GB, ASTM, EN, JIS international standards
STANDARD SPECIFICATIONS
ITEM | STANDARD RANGE |
Thickness | 0.1-3.0MM |
width | 500-1500MM |
inner Diameter | Φ508 mm / Φ610 mm |
grade | DX51D+Z, DX52D+Z, DX53D+Z, SGCC, SGCD, SGC340, SGC440 |
Zinc Coating | Z20 - Z275 g/m² |
surface | 有花 Regular Spangle / 无花 Zero Spangle / 耐指纹 Fingerprint Resistant |
MECHANICAL PROPERTIES (DX51D+Z / SGCC)
Grade | YS(Mpa) | TS(Mpa) | EL(%) |
DX51D+Z | 140-300 | 270–500 | ≥22 |
DX52D+Z | 140-260 | 270–420 | ≥26 |
DX53D+Z | 120-220 | 270–380 | ≥30 |
SGCC | 160-320 | 300–450 | ≥20 |
CHEMICAL COMPOSITION (MASS FRACTION %)
C≤0.10、Si≤0.03、Mn≤0.50、P≤0.030、S≤0.030、Alt≥0.015
DIMENSIONAL TOLERANCE
- Thickness Tolerance：±0.01mm～±0.05mm
- Width Tolerance：±0.5mm
- Length Tolerance：±1.0mm
- Flatness：≤0.5mm/m
- Camber：≤1.5mm/m
MAIN APPLICATIONS
Building roof and wall, profiled steel sheet, steel structure enclosure, home appliance shell, air conditioner & refrigerator panel, electrical cabinet, automotive parts, ventilation duct, hardware products, metal furniture, outdoor equipment shell.
