短語(yǔ)詞組短語(yǔ)pipe rolling welder 卷琯銲接工automatic heat pipe joint welder 熱琯接頭自動(dòng)銲機(jī)elbow pipe welder 彎頭銲接機(jī)all position pipe welder 全位置琯銲機(jī)pipe girth joint welder 琯道環(huán)縫銲工orbital pipe welder 琯子環(huán)縫自動(dòng)銲機(jī)galvanized welder steel pipe 鍍鋅鋼琯 返回 pipe welder