What is the difference between GI and hot-dip galvanized?
The key difference between galvanized and hot dip galvanized is that most galvanized materials have a smooth
and sharp finishing, whereas hot sip galvanized structures have a rough finishing. Galvanization is a process
of preventing metal surfaces from corrosion.
Does zinc coating prevent rust?
Nearly one half of all zinc produced is used in zinc galvanizing processes to protect steel and iron from rusting.
This involves coating the surface of a metal with a thin layer of zinc to create a corrosion-resistant barrier.
How long does zinc plated steel last?
Material is immersed in molten zinc at a temperature of around 450 degrees until the temperature of the work
is the same as the Zinc. During this process, the molten zinc reacts with the surface of the steel to form a series
of zinc/iron alloys. These alloy layers protect steel from corrosion for 30-40 years and more.
Product description
Name | Gi Coils Hot Dipped SGCC Dx51d Metal Zinc Galvanised Sheet Roofing Materials 275GSM 2mm Thick Z150 Z120 Z80 Regular Spangle Zinc Coated Galvanized Steel Coil |
Grade | DX51D+Z, DX52D+Z, DX53D+Z, DX54D+Z, DX56D+Z, DX57D+Z, DC51D+Z, SGCC, SGCD, S220GD+Z, S250GD+Z, S280GD+Z, S320GD+Z, S350GD+Z, S550GD+Z |
Width | 600-1500mm |
Thickness | 0.12-4mm |
Zinc coating | 30-400g/m2 |
Surface treatment | chromated / oiled/slightly oiled/ dry |
Hardness | soft, full hard, half hard |
Spangle | zero spangle / minimized spangle / regular spangle/ big spangle |
ID coil | 508mm or 610mm |
Coil weight | 2-8 MT per coil. According to the customer's requirements |
Package: | Standard export package (Plastic film in the first layer,second layer is Kraft paper. Third layer is galvanized sheet) |
Application: | Industrial panels, roofing and siding for painting |
Chemical Composition | ||||||
GRADE | C | Si | Mn | P | S | Ti |
SGCC/DX51D+Z | ≤0.10 | ≤0.50 | ≤0.60 | ≤0.10 | ≤0.030 | ≤0.020 |
DX52D+Z | ≤0.10 | ≤0.50 | ≤0.60 | ≤0.10 | ≤0.030 | ≤0.020 |
SGCD/DX53D+Z | ≤0.10 | ≤0.30 | ≤0.50 | ≤0.05 | ≤0.030 | ≤0.020 |
SGCE/DX54D+Z | ≤0.10 | ≤0.30 | ≤0.30 | ≤0.03 | ≤0.020 | ≤0.020 |
DX56D+Z | ≤0.10 | ≤0.30 | ≤0.30 | ≤0.03 | ≤0.020 | ≤0.020 |
Structural | ≤0.20 | ≤0.60 | ≤1.70 | ≤0.10 | ≤0.045 | |
Mechanical Properties | ||||||
GRADE | Yield Strength MPa | Tensile Strength MPa | Elongation % | |||
SGCC(DX51D+Z) | ≥205 | ≥270 | - | |||
SGCD(DX53D+Z) | - | ≥270 | 38 | |||
SGCE(DX54D+Z) | - | ≥270 | 40 | |||
DX56D+Z | - | ≥270 | 42 |
FAQ