锥管螺纹密封焊连接 seal-welded taper pipe threaded joint 承插焊连接(接头) socket welded joint 承插连接(接头) bell and spigot joint ..
基于420个网页-相关网页
... 锥管螺纹密封焊毗连 seal-welded taper pipe threaded joint 承插焊毗连(接头) socket welded joint 承插毗连(接头) bell and spigot joint ...
基于14个网页-相关网页
·2,447,543篇论文数据,部分数据来源于NoteExpress