... :1/8"- 6" MOQ:1000 Pcs Full thread carbon steel socketPlace of Origin: China high quality steel pipe nipples, steel sockets, ... merchant coupling, hose coupling, hose mender,king nipples, full thread couplingProduct: steel ... BS EN10241, ASTM A 865, DIN 2986, the thread refers internal parallel thread.5) Size available from 1/8" to 6"We ...