Hot-dipped galvanizing is the process of applying a thin layerof zinc directly on hot rolled or cold rolled steel coil by
passing it through a molten bath of zinc . Galvanizing steel forms a metallurgical bond between the zinc and the underly-
ing steel sheet . when exposed to the air, zinc reacts with oxygen , water , and carbon dioxide to form a layer of tough
zinc carbonate (ZnCO3 ). It protects the underlying steel and creates a barrier that becomes part of the steel itself and very
good formability.
MOQ：our moq should be 60mt per size
| Thickness | 0.13mm - 5.0mm |
| Width | 600mm - 1500mm |
| Zinc coating | 40g/m2 -500g/m2 |
| Spangle | Regular / Minimized / Zero |
| Passivation | Chromated / Chromated-free |
| Surface Treatment | SKIN PASS |
| Oiled | Oiled / Dry |
| Coil ld | 508mm / 610mm |
| Coil weight | 3mt-18mt |
| Standard | JIS3302 | EN10327 / EN10326 | ASTM A653 |
| Grade | SGCC/SGCH | DX51D+Z / DX52D+Z | CS |
| SGC 340 | S22DGD+Z | SS GRADE 230 | |
| SGC 400 | S25DGD+Z | SS GRADE 255 | |
| SGC 440 | S28DGD+Z | SS GRADE 275 | |
| SGC 490 | S32DGD+Z | SS GRADE 340 | |
| SGC 570 | S35DGD+Z | SS GRADE 550 | |
| ; | S55DGD+Z | ; |
HOT-DIP GALVANIZING LINE
High corrosion, and rust resistance similar to that of
conventional chromate-treated sheet even with chromate
free treatment
Excellent zinc adhesion and responsiveness to severe
fabrication conditions .
MACHANICAL PROPERTY
JIS G 3302-1994
| Base Metal Classification | “Yield Strength(N/mm2)” | “Tensile Strength(N/mm2)” | % Elongation (Minimum) | |||
|---|---|---|---|---|---|---|
| Nominal Thickness (mm) | ||||||
| 0.25—0.40 | 0.60—0.60 | 0.60—1.00 | 1.00—1.50 | |||
| SGCC | -- | -- | -- | -- | -- | -- |
| SGCH | -- | -- | -- | -- | -- | -- |
| SCGD1 | -- | 270 min | -- | 34 | 36 | 37 |
| SGC 340 | 245 min | 340 min | (20)* | 20 | 20 | 20 |
| SGC 400 | 295 min | 400 min | (18)* | 18 | 18 | 18 |
| SGC 440 | 335 min | 440 min | (18)* | 18 | 18 | 18 |
| SGC 490 | 365 min | 490 min | (16)* | 16 | 16 | 16 |
| SGC 570 | 560 min | 570 min | -- | -- | -- | -- |
| Base Metal Classification | “Yield Strength (Mpa)” | “Tensile Strength (Mpa)” | %Elongation (Minimum) |
|---|---|---|---|
| “Applicable To full Range Of Nominal Thickness” | |||
| CS TYPE A | (170-380)* | -- | ≥20 |
| CS TYPE B | (205-380)* | -- | ≥20 |
| CS TYPE C | (170-410)* | -- | ≥15 |
| FS TYPE A & B | (170-310)* | ≥26 | |
| SS 230** | 230 min | 310 | ≥20 |
| SS 255** | 255 min | 360 | ≥18 |
| SS 275** | 275 min | 380 | ≥16 |
| SS 340** | 340 min | -- | -- |
| SS 550** | 550 min | 570 | ≥12 |
| Base Metal Classification | “Yield Strength(N/mm2)” | “Tensile Strength(N/mm2)” | % Elongation (Minimum) | |
|---|---|---|---|---|
| Nominal Thickness (mm) | ||||
| ≤0.70mm | 0.7mm-1.5mm | |||
| DX51D | -- | 270-550 | 20 | 22 |
| DX52D | 140-300 | 270-420 | 24 | 26 |
| S 220 GD | 220 min | 300 min | 18 | 20 |
| S 250 GD | 250 min | 330 min | 17 | 19 |
| S 280 GD | 280 min | 360 min | 16 | 18 |
| S 320 GD | 320 min | 390 min | 15 | 17 |
| S 350 GD | 350 min | 420 min | 14 | 16 |
| S 550 GD | 550 min | 560 min | -- | -- |
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