Butt Weld
阀门行业的问题 deg butt weld
weld
英语翻译1.Stainless Steel 316 Lost Wax Butt Weld Fittings Astm A
英语翻译guide channel .ex.2/75*50 R.S.A.‘s butt weld toe to toe
90 DEG ELBOW STAINLESS STEEL BUTT WELD SCH.10 20" ASTM A403
weld nipple
my butt
back weld和backing weld区别在那里
up one's butt
She is butt-ugly.
butt-steak什么意思
pinch one's butt