Company info
- Tianjin Jinggong Petroleum pipe fitting co., Ltd mainly produces Petroleum tubing and casing coupling. We have 10 modes of tubing coupling and 37 modes of casing coupling, which have 6 steel levels. Main kinds of thread are long round thread casing (LC), short round thread casing (STC) and buttress thread casing (BC). Special-bevel couplings have non-upset tubing (NU) and extend-upset tubing EU. NU has a mode of special –clearance couplings....