elded steel pipe 烧焊钢管

butt elded joint 对焊毗连

elded bon 烧焊阀盖

butt elded end 对于焊端 ; 对焊端

galvanized elded pipe 镀锌焊管

spiral elded steel pipe 螺旋烧焊钢管

elded Bellows 焊接波纹管

elded disc rotor 烧焊转子

elded twisted pnir 屏蔽双绞线