Hot dip aluminum-zinc steel(aluzinc steel/galvalume steel) sheet is a kind of pre coated steel plate, which is made of cold rolled steel plate of various strength, thickness and specifications as the base material and is hot-dip plated with a layer of Aluminum and zinc coating on both sides. The content percentage of the coating composition is 55% Al, 43.5% Zn and 1.5% Si, which combines the physical protection and high durability of Al as well as the electrochemical protection characteristics of Zn. In addition, hot-dip aluminum-zinc steel plate has a highly decorative bright silver gray color and regular patterns on the surface, and has a textural convex surface.
Hot dip aluminum zinc steel sheet is widely applied in industrial products such as construction, automobile and household appliances:
Construction industry: light steel keel, building floor, roof, exterior wall, garage door, rolling shutter door, fence and shutter of various civil and industrial buildings.
Household appliances: the shell and bottom plate of various household appliances, ovens, explosion-proof strips, external covers of air conditioning and ventilation systems, solar water heaters, and electrical components.
Automobile industry: shell, inner plate, bottom plate, muffler, heat shield of exhaust pipe and catalytic converter, parts at the bottom of automobile body, road sign plate.
Industrial instruments: electric control cabinet, industrial freezer, vending machine, etc.
1、Available specification range of WITOP STEEL
|Type||Thickness (mm)||Width (mm)||Length ( or Coil Inner Diameter)(mm)|
|Steel Coil||0.12-1.50||600-1250||508 or 610|
|Steel Strip||0.12-1.50||20-600||508 or 610|
2、Standard and steel grade of WITOP STEEL
|Type of Material||BAOSTEEL Standard||Steel Grade||Notes|
|Cold Forming Steel||Q/BQB425||DC51D+AZ||Suitable for Cold Forming|
|Structural Steel||S250GD+AZ||Suitable for Structural Steel|
|a：applicable to products with incomplete annealing after rolling hardening|
3、Classification and code of coating type of WITOP STEEL
|Coating Type||Aluminum zinc alloy coating||AZ|
|Coating weight g/m2||20/20, 30/30, 40/40, 50/50, 60/60, 75/75, 90/90|
4、 Classification and code of surface treatment of WITOP STEEL
|Surface Treatment||Chromate Passivation||C||This surface treatment can reduce the black rust on the product surface during transportation and storage.|
|Oiled||O||This surface treatment can reduce the black rust on the product surface, which is generally not used as rolling oil and stamping lubricating oil for post-processing.|
|Chromate Passivation+Oiled||CO||This surface treatment can further reduce the black rust on the product surface|
|Anti Finger Print Film||AFP||This surface treatment has no trace on the surface after finger touching, which can reduce the black rust on the product surface.
No-Color AFP, Golden-color AFP, Green-color AFP, Blue-color AFP.
|Untreated||U||This surface is easy to cause black rust, so the user should consider carefully when selecting.|
5、Hot-dip aluminum zinc comparison table of similar grades of WITOP STEEL
|Q/BQB 425-2009||AS 1397-2001||EN 10215-1995||ASTM A792M-02||JIS G 3321:1998||ISO 9364-2001|
|DC51D+AZ||G2+AZ||DX51D+AZ||CS type B、type C||SGLCC||01|