نمایش نتیجه 1 تا 2 از 2 نتیجه یافت شده برای root pass:
n: in pipeline construction. the welding crew that takes over after the root pass and the hot pass have been made. The firing line is responsible for the filler pass and the cap bead, which complete the joint.
n: the welding pass made after the root bead is made when uniting two joints of pipeline.
© ۱۳۹۲-۱۳۹۷ این اثر شامل قانون حمایت از مولفین بوده و هرگونه کپی برداری از آن ممنوع است.
