Jiansu Hengsai Metal Co.,Ltd
Jiansu Hengsai Metal Co.,Ltd
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Types Of Zinc Coating Of Galvanized Steel Coil
Hot-dip galvanized coils are divided into pure zinc coating and zinc-iron alloy coating according to the coating. Their common point is that the zinc content of the zinc solution in the zinc pot is the same. The difference is that the zinc-iron alloy adds an alloying process.
Pure Zinc Coating
In the hot-dip galvanizing production line, the pre-treated steel strip is immersed in the molten zinc bath to obtain the coating. The zinc content in the molten zinc solution should not be less than 99%.
Zinc-Iron Alloy
A zinc-iron alloy layer is formed on the entire coating through an alloying treatment process, and the iron content in the alloy coating is usually 8-15%. During the alloying process, the galvanized steel coil is heated to 550-560°C in an alloying furnace in 5-10 seconds, so as to convert all the pure zinc layer into iron-zinc alloy. Its weldability, coating performance, heat resistance, and corrosion resistance are better than ordinary galvanized sheets.
| item | value |
| Standard | AiSi |
| Grade | SGCC/CGCC/TDC51DZM/TDC52DTS350GD/TS550GD/DX51D+Z |
| Application | making pipes, cutting sheets, making small tools, making corrugated sheets, making container, Container Plate |
| Place of Origin | China |
| Tolerance | ±1% |
| Processing Service | Bending, Welding, Decoiling, Punching, Cutting |
| Steel Grade | 310S, 316L, 316, 321, 430, 309S, 304, 304L, 904L |
| Surface Finish | 2B |
| Delivery Time | 15-21 days |
| Product name | Galvanized Steel Coil / Sheet |
| Width | 600 - 1250MM |
| Zinc Coating | Z30 - 600g/m2 |
| ID of Coil | 508/610MM |
| Thickness | 0.105- 4MM |
| Surface Structure | Regular spangle,Minimum spangle, Zero spangle, Big spangle |
| HRB | Soft Hard (<60),Medium Hard (60-85), Full Hard (85-95) |
| Packaging | Dust-proof kraft sheet, iron packing, Angle protective, packing belt |
| Payment Terms | T/T, LC, Western Union, Paypal, O/A, DP |
| Regular Order | 25 tons or one container |
Galvanized Steel 0.18mm-20mm thick galvanized steel sheet 2mm thick Hot dip galvanized steel sizes galvanized sheet metal roll
| bse metal type | Grade | CHEMICAL COMPOSITION % | |||
| C | Si | Mn | P | ||
| cold rolled steel sheet | DC51D+Z (St01Z, St02Z, St03Z) , DC51D+ZF | ≤0.10 | - | ≤0.50 | ≤0.035 |
| DC52D+Z (St04Z), DC52D+ZF | ≤0.08 | - | ≤0.45 | ≤0.030 | |
| DC53D+Z (St05Z), DC53D+ZF | ≤0.08 | - | ≤0.40 | ≤0.030 | |
| DC54D+Z (St06Z), DC54D+ZF | ≤0.01 | ≤0.10 | ≤0.30 | ≤0.025 | |
| DC56D+Z (St07Z), DC56D+ZF | ≤0.01 | ≤0.10 | ≤0.30 | ≤0.025 | |
| hot rolled steel sheet | DD51D+Z (St01ZR, St02ZR) | ≤0.10 | - | ≤0.50 | ≤0.035 |
| DD54D+Z (St06ZR) | ≤0.01 | ≤0.10 | ≤0.30 | ≤0.025 | |
