girth welding

常用短語

butt girth welding seam對接環焊縫

Girth-Welding環形焊接

girth welding seam環焊縫

hutt girth welding對接環縫焊

girth welding joint環焊接頭

girth welding technology環焊技術

girth welding of pipe管道環焊

girth welding machine tool環縫焊接機床

performance of girth welding環焊性能