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S350GD S550GD SGCC SGHC SGCH Galvanised steel coils
The production process of hot-dip galvanized sheet mainly includes: raw sheet preparation → pre-plating treatment → hot dip plating → post-plating treatment → finished product inspection, etc.
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Hot Dipped Galvanized Steel
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The production process of hot-dip galvanized sheet mainly includes: raw sheet preparation → pre-plating treatment → hot dip plating → post-plating treatment → finished product inspection, etc.
| Coating designation | Minimum total coating weight for both surfaces, g/m2 | Theoretical recommended values of the coating thickness per unit of surface for single-spot tests, microns | Density,
g/cm3 |
||
| Three-spot | Single-spot | Reference value | Interval | ||
| Z100 | 100 | 85 | 7 | 5-12 | 7.1 |
| Z140 | 140 | 120 | 10 | 7-15 | |
| Z200 | 200 | 170 | 14 | 10-20 | |
| Z225 | 225 | 195 | 16 | 11-22 | |
| Z275 | 275 | 235 | 20 | 15-27 | |
| Z350 | 350 | 300 | 25 | 19-33 | |
| Z450 | 450 | 385 | 32 | 24-42 | |
| Z600 | 600 | 510 | 42 | 32-55 | |
Application: cold stamping, cold profiling, colour coating (skin passed), general application;
Drawing capability: normal drawn, deep drawn, extra deep drawn;
Smoothness of zinc coating thickness: normal crown, lesser crown.
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