Material standard and chemical requirements for galvanized sheet
Material standard and chemical requirements of galvanized sheet:
1. Scope:
Galvanized sheet This standard specifies the contact agent used in the drying process of hot dip galvanizing – zinc chloride + ammonium chloride (2 or 3 salt compounds). The supplier or manufacturer of the material shall meet the following requirements of the standard:
2. Process requirements: colorless or light yellow crystal. Levels: There are two levels to choose from; Standard: Standard with wetting agent;
3. Certificate of qualification:
Delivery must be accompanied by a certificate of conformity to this standard.
Material standard for zinc-aluminum alloy
Range of 1.
This standard specifies the zinc and aluminum ingots that are added to the zinc pool during hot dip galvanizing. The supplier or manufacturer of the material shall meet the following requirements of the standard.
2. Process requirements 2.1 Chemical composition
Aluminum copper = = 4.5-5.0% maximum 0.001% magnesium = 0.002% lead cadmium = = 0.003% of the maximum 0.003% iron = maximum 0.002% Sh = 0.002%
2.2 Weight: about 9.5-10kg.
3. The certificate of approval
Delivery must be accompanied by a certificate of conformity to this standard.
Material standard for zinc-lead alloys
Range of 1.
Description: Hot dip galvanized zinc ingots (zinc sheets) meet ASTM B-6-95 requirements. Grade: Approximately 1% lead in the original western standard.
2. Process requirements
2.1 Chemical composition: lead: 0.5-1.4 iron < 0.05 cadmium < 0.01 copper < 0.002 tin < 0.001 aluminum < 0.005
2.2 Weight: about 25kg.
