OD 3.1/2” TUBING 9.3# L-80 R2 NUE BEVELED COUPLINGContact:Jose liuEmail:jose@dlpoctg.comSkype:jose@dlpoctg.comTel:+86-18722585559WeChat:18722585559 Hot Tags: od 3.1/2” tubing 9.3# l-80 r2 nue beveled coupling, China, manufacturers, factory, in stock