butt weld 是什么意思

butt weld 是什么意思 Butt Weld BUTT WELD ADAPTOR TYPE :AW2 是什么意思啊?有对应的国标么?急~在图纸上看到这个不知道是什么,有对应国内的标准么? weld connection是什么意思 【英语】bubble-butt是什么意思? butt-simple是什么意思啊? butt-whupping是什么意思 阀门行业的问题 deg butt weld TEE EQUAL 3 90 DEG BUTT WELD S.S (A403) GR.WP 316 SCH.10S weld butt butt 英语翻译guide channel .ex.2/75*50 R.S.A.‘s butt weld toe to toe （50legs） 90 DEG ELBOW STAINLESS STEEL BUTT WELD SCH.10 20 ASTM A403 ( TWO JOINT)怎么理解TWO JOINT Decided to butt brain中文是什么意思 weld globe valve that has attached to i need butt weld globe valve that has attached to hubsupplier will take a standard butt weld end valve and they will attach the hub ends that you specify by welding关于截止阀的 英语翻译1.Stainless Steel 316 Lost Wax Butt Weld Fittings Astm A403 Ansi B16.92.Stainless Steel 316 Lost Wax 150 Lbs British Atanderd Screwed Fittings 哪位仁兄帮我解释下WELD是什么意思? weld nipple