Galvalume/Zincalume steel coil(GL)
is a kind of coated steel. 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%, Si 1.6%,while the remaining is Zn. 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. It has been widely used in architecture, appliances industry,auto industry and industrial instruments.
Process Flow
Basic Parameters
| Nominal Thickness(mm) | 0.14~2.0 |
| Nominal Width(mm) | 20~1250 |
| Coating Weight(g/m2) | 40~150 |
| Coil ID(mm) | 508 |
| Coil Weight(Tons) | 2-12 |
| Application | Building industry ,structural use, roofing, commercial use, household appliance, industry facilities, office buildings |
| The special order can be negotiated | |
Standard and steel grade
| GB/T 14978-2008 | AS 1397-2001 | EN10326:2004 EN10327:2004 | ASTM A792M-08 | JIS G 3321:2007 |
|---|---|---|---|---|
| DX51D+AZ | G2+AZ | DX51D+AZ |
CS type B CS type C |
SGLCC |
| DX52D+AZ | G3+AZ | DX52D+AZ | DS | SGLCD |
| DX53D+AZ | - | DX53D+AZ | - | SGLCDD |
| DX54D+AZ | - | DX54D+AZ | - | - |
| S250GD+AZ | G250+AZ | S250GD+AZ | SS 255 | - |
| S300GD+AZ | G300+AZ | - | - | SGLC400 |
| S350GD+AZ | G350+AZ | S350GD+AZ | SS 345 class1 | SGLC440 |
| S550GD+AZ | G550+AZ | S550GD+AZ | SS 550 class1 | SGLC570 |
Surface treatment
| Item | Classification | Symbol |
|---|---|---|
| Coating type | Al-Zn alloy | AZ |
| Surface finish | Minimized/Regular/Big spangle | |
| Surface treatment | Chromate passivated | C |
| Non-chromate passivated | C5 | |
| Chromate passivated+oiling | CO | |
| Non-chromate passivated+oiling | CO5 | |
| Anti-fingerprint | N | |
| Non-chromate anti-fingerprint treatment | N5 | |
| oiling | O | |
| No treatment | U |
