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Is hot dipped galvanized better?
The thicker zinc coating produced by hot dip galvanization offers
improved rust and corrosion protection versus
pre-galvanization. This is an important quality in a temporary fence panel, as it is most often used outdoors and
exposed to snow, ice, rain, and salt.
How long do galvanised roofing sheets last?
Metal roofing sheets have a considerably long lifespan and,
although manufacturers will often state an expected
lifespan of 10 – 15 years, people more than often find that they last much, much, longer with some people reporting
their sheets to still be in good working order after 60 years!
What is purpose of zinc coating on GI sheet?
Because of the sacrificial nature of the zinc, the coating provides
corrosion protection for areas of exposed steel
surfaces, such as cutting edges and areas where coating has damaged (scratches, impacts, etc.).
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
