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Building Materials Zinc Coated Gi Steel Sheet Customized 600 - 1250 MM Width
Brief Introduction
Galvalume steel coil and sheet is a kind of coated steel coil/sheet. With the cold rolled steel of different strength and thickness as substrate, it is produced through applying Al-Zn coat on both faces by hot dip process. In its coating, Al accounts for about 55%, zinc 43.4%,Si 1.6%. It enjoys both the physical protective feature and durability of Al and the electrochemical protective property of Zn. And its surface has bright silver color and regular embossed-like figure, which are highly decorative.
The excellent corrosion resistance of Aluzinc is a result of the properties of the two metallic substances: the barrier effect of the aluminium present on the surface of the coating and the sacrificial protection of zinc.
Description
| Commodity Name | galvalume steel coil and sheet |
| Grade | DX51D+Z, DX52D+Z , DX53D+Z , DX54D+Z , DX56D+Z and so on |
| Spangle | Small/regular/big/zero |
| Chemical Composition | Low carbon |
| Thickness | 0.23mm-1.5mm |
| Tolerance | thickness+/-1mm |
| Aluzinc coating | 30-275g/ |
| Type of coating structure | 2/1 or 2/2 coating, or customized |
| Color | According to customer’s samples or RAL color |
| Surface treatment | Oiled/ unoiled |
| Technique | Cold rolled; Galvanized |
| Packing | seaworthy standard export packing or as per customer's request |
| Applications | Building industry ,structural use, roofing, commercial use ,household appliance,industry facilities,office buildings |
| Port | Shanghai or Tianjin |
Surface Treatment
| Surface Treatment | Feature |
| Chemical Treatment | minimize the chance of humid-storage staining forms a dark gray surface discoloration on the surface |
| retain the bright metallic luster for a long period | |
| Oil | minimize the tendency for humid-storage stain |
| Chemical Treatment and Oil | The chemical treatment provides very good protection against humid-storage staining, while the oil provides lubricity for operations. |
| Dry | must be transported and stored with special precautions to preserve low-humidity conditions. |
| Anti-finger print | minimize the chance of humid-storage staining forms a dark gray surface discoloration on the surface |
Application
1. Architecture Roofs and outside walls of civilian and industrial buildings, gar
