What is hot-dip galvanised steel?
Hot-dip galvanising is a process that involves coating steel with a thin layer of zinc to prevent rust from forming. The surface treatment is achieved by passing the steel through molten zinc at high temperature, providing long-term protection for steel products.
The zinc coating has a corrosion resistance and sacrificial corrosion function that delays the production of red rust. The zinc layer of hot-dip galvanised steel is higher than that of electro-galvanised sheet steel, giving it better corrosion resistance.
Specification of hot dip galvanized steel sheet and coil
Grade | SGHC, SGH400, SGCC, SGCH, SGCD, SGC400... |
Thickness | Cold rolled: 0.11-3.2mm;Hot rolled: 1.6-6.0mm |
Width | 610-1630mm |
Zinc coating | G20, G30, G40, G60, G90, G115,G140, G165, G185, G210. |
Surface Finish | Regular Spangle Sheet,Minimum Spangle |
Surface Treatment | Chemical Treatment, Oil, Chemical Treatment and Oil, Dry, Phosphatized |
Applications for hot-dip galvanised steel sheet and coil
- Automotive
- Pipes and tubes
- Exterior cladding
- Agriculture
- Construction
Advantages of hot-dip galvanised steel sheet and coil
- Excellent formability
- Outstanding corrosion resistance
- Consistent quality



