What are the differences between the ASTM A123 and CSA G164 standards? Is the CSA G164 standard always a valid specification?
As the industry standard, the ASTM A123 Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products provides the hot-dip galvanized coating requirements for various steel products. Most galvanizers located in North America use this specification as the standard for coating thickness, appearance, finish and adherence.
Is it true that the welding of stainless galvanized steel can cause weakening?
When extreme levels of protection against corrosion are required, stainless steel is sometimes galvanized. This provides great protection against corrosion. However, the welding of such corrosive protection systems is a concern. When certain types of metals become molten, they may cause cracks in other types of metals.
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What are the considerations to be taken during the design of steel structures to be galvanized?
As its name suggests, steel is dipped in a molten zinc bath during the hot-dip galvanizing process. Although the process appears simple, hot-dip galvanizing is different from that of other corrosion protection coating systems or paint, and therefore has special requirements during the design phase in order to ensure a high quality zinc coating.
Explaining the benefits of hot-dip galvanized steel to a customer may raise more questions than answers. For example, discussing the benefits of the protective barrier as a corrosion controller proves to be a much simpler task than explaining the benefits of cathodic protection, a complex subject that requires a more technical answer.