Zinc coating steel coil for roofing sheet
AISI,ASTM,GB,JIS
SGCC, SGCH,DX51D, Q195,Q235, all according to the customer's request
0.13-2mm
Min trial order 25 ton each thickness
Galvanised steel is mild steel with a coating of zinc The zinc protects the steel by providing cathodic protection to the exposed steel, so should the surface be damaged the zinc will corrode in preference to the steel Galvanised steel is one of the most widely used products, used extensively in the building sector, automotive, agricultural and other areas where the steel needs to be protected from corrosion
Hot-Dip Galvanizing or HDG is a process in which zinc bonds to steel at the molecular level to produce a four-layer corrosion-resistant finish. The first three layers are zinc-iron alloy layers that are actually harder than the base steel. The fourth or top layer is pure zinc.
| Standard | AISI,ASTM,GB,JIS | Grade | SGCC, SGCH,DX51D, Q195,Q235, all according to the customer's request |
| Thickness | 0.13-2mm | Width | 600-1250mm |
| Regular Size | 750-762mm,900-914mm,1000mm,1200mm,1219-1250mm all available | ||
| Tolerance | +/-0.02mm | Zinc coating | Z30-600g/㎡ |
| Coil ID | 508/610mm | Coil Weight | 3-8 tons |
| Technique | Hot rolled, cold rolled | Package | Seaworthy package |
| Certification | ISO 9001-2008,SGS,CE,BV | MOQ | 25 tons (in one 20ft FCL) |
| Delivery | 15-20 days | Month Capacity | 12000 tons |
| Surface Treatment | Oiled(O),Chromium(C),Phosphating(P),Spinpass | ||
| Spangle | Regular spangle,minimal spangle, zero spangle,big spangle | ||
| Standard Packing | Dustproof kraft sheet Iron packing Angle protective packing belt | ||
| Remarks | Min trial order 25 ton each thickness | ||
| HRB | Soft Hard(<60) Medium Hard(60-85) Full Hard(85-95) | ||
| Mechanical properties of galvanized steel | |||
| Usage | Grade | Yield strength(MPa) | Tensile strength(MPa) |
| Punching galvnaized steel | DC51D+Z | - | 270-500 |
| DC52D+Z | 140-300 | 270-420 | |
| DC53D+Z | 140-260 | 270-380 | |
| Structure galvanized steel | S280GD+Z | ≥280 | ≥360 |
| S350GD+Z | ≥350 | ≥420 | |
| S550GD+Z | ≥550 | ≥560 | |
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