承插焊法兰 socket welding flange ; SW ; SOCKET WELD

承插支管台 sockolet

承插焊端 socket welding end

承插焊接 socket weld

承插焊的 socket welded

承插连接 bell and spigot joint

承插焊 SW ; socket-weld ; sock welded

承插焊连接 socket welded joint

承插管 socket pipe ; spigot and socket pipe

承插接合 spigotjoint ; socket and spigot joint