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[China]
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Is cold rolled steel stronger than galvanized steel?
Cold-rolled steel has superior directional strength, which is
valuable for certain high-load applications.
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.
Which is better galvanized or hot dipped galvanized?
As mentioned, pre-galvanized components are usually only immersed in the galvanizing bath for a very short time, resulting in a relatively thin coating. The thicker zinc coating produced by hot dip galvanization offers improved rust and corrosion protection versus pre-galvanization.
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 | |||
