Galvanizing chemicals For the batch hot dip galvanizing, ASTM specifications are arranged differently. A153A153M and ASTM A123A123M are some of the commonly utilized specifications for Preparation for hot dip galvanizing. They cover all the inspection need of finished galvanized product. ASTM A385A385M, A384A384M and A143A143M are said to discuss on fabrication process for steel that are to be hot dip galvanized. They also can address few of the surface preparation recommendations before galvanizing.