PUP JOINT/CROSSOVER/TUBING/SUCKER ROD 5 1/2 6 5/8 7 5/8 BTC/LTC/STC API 5CT 10th casing pipe btc ltc connectionPIN*PIN/PIN*BOX

1.The introduce of Henan Dongfanglong Machine Manufucture co.,ltd

     Henan Dongfanglong is currently an emerging marketing enterprise based on OCTG casing. Located in Beijing, near Tianjin port, the largest port in north of China.    With API 5CT oil casing and API 5L oil line pipe,as the main products,with production and sales integration, professional domestic and foreign trade operations, strength financial , rich experience.

2.The detail of tubing couplings

3.The picture show of tubing coupling

The Inspections

        All our products are produced and processed according to, with the materials of steel grade including J55,K55,N80,N80-1, N80-Q,L80,P110 and so on. The couplings have two types, namely NU(non-upset) and EU(external upset). By nume rically controlled lathe and import molding cutter, the processing of thread can be finished in one time,which ensures its commonality and interchangeability. We have complete testing abilities, adopting a whole set of single testing apparatus of thread,including tape,pitch,tooth depth,profile and so on.Our products have already passed the identification of the Quality Testing and Inspection Centre of Oil Pipe of CNPC(China National Petroleum Corperation).

PUP JOINT/CROSSOVER/TUBING/SUCKER ROD 5 1/2 6 5/8 7 5/8 BTC/LTC/STC API 5CT 10th casing pipe btc ltc connectionPIN*PIN/PIN*BOX