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What's the difference between batch and batch hot dip galvanizing?


Asked by Cassidy Hartman on Nov 30, 2021 FAQ



In general, the coating thickness on these products is considerably less than batch hot dip galvanized items of the same thickness. For example, a coating designation of Z350 means the total mass on both sides is 350 g/m 2, or approximately 175 g/m 2 on a single area.
Thereof,
Batch hot-dip galvanizing according to ASTM A123, Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products, refers to the process where steel articles are suspended by chain, hook, or wire, and then coated by immersing the articles in a kettle containing molten zinc.
Similarly, "Galvanneal" refers to steel with a zinc-iron alloy coating. This is produced by heating a hot dipped galvanized surface so that the zinc coating and the top layer of the steel surface essentially meld together to form a zinc-iron alloy. Galvanneal would most likely be more expensive because of the additional processing.
Keeping this in consideration,
Batch galvanizing is the process where an unbroken zinc coating is applied to the surface of a finished steel product or fabricated shape. The corrosion-resistant coating is achieved by immersing the object into a bath of molten zinc. This process can be done either one at a time, or with several parts in one batch.
Next,
Moreover, hot dip galvanizing is known to change thread dimensions. However, it is quite common for cutting threads and allows dimensional change. For more information on hot dipped galvanized metals increase the life of a the metal click here.