谁来给翻译? welding procedure qualification essential and supplementary - essential variables in addition to the requirement of ASME 6 the welding procedure specification shall require prequalification if any of the following changes are made: 1. any change in the manfacturer or brand designation of SAW wire or flux(埋弧焊焊丝\焊剂) or both 2.for procedure where impact testing is required: an increase in the specified current range an increase in the maximum electrode diameter an increase i n the width of weave or a change from string to weave bead technique an increase in the maximum interpass temperature above 250 a chang of SMAW eletrode manufacturer or brand查看更多0个回答 . 4人已关注