1.1 Scope. This standard specifies the requirements for cassification of weld- through paint primers only. The paint primers are classified based on the maximum coating thickness for successful welding and the welding procedure used during the classification test. This standard provides a system for paint manufacturers to classify the weldability features of weld-through paint primers. This standard is limited to weld-through paint primers only and does not include galvanized or other types of protective coatings.
