API 5CT OCTG J55 K55 N80 L80 P110 2 3/8 tubing coupling1

Product description：

2-3/8NU  2-3/8EU  2-7/8NU  2-7/8EU  3-1/2NU  3-1/2EU 

4-1/2NU  4-1/2EU  4-1/2STC   4-1/2LTC  4-1/2BTC 

5LTC   5BTC    5-1/2STC   5-1/2LTC   5-1/2BTC   6-5/8BTC 

7STC  7LTC  7BTC   7-5/8LTC  7-5/8BTC

8-5/8STC  8-5/8LTC  8-5/8BTC 

9-5/8STC 9-5/8LTC  9-5/8BTC  10-3/4STC  10-3/4BTC 

13-3/8STC   13-3/8BTC

20STC  20BTC  3-1/2FH (320 321)

4FH (420A 421A) 4-1/2FH(420 421) 

5-1/2FH (520 521 )  6-5/8FH (620 621)  2-3/8IF (210A 211A)

Use: This product is a necessary supporting product for petroleum special steel pipe, and plays the role of protecting steel pipe threads. Prevent damage during loading, unloading and transportation.

Henan Dongfanglong Machine Manufacture Co., Ltd
Henan Dongfanglong Machine Manufacture Co., Ltd. was founded in 1999, mainly engaged in oil pipes and pipe fittings, oil special drilling and production tools and oil automation equipments. The company is  named as national integration and standard implementation enterprise, a national science and technology-based small and medium-sized enterprise. With honors of"Henan enterprise technology center", "Henan postdoctoral innovation practice base”, the company hold 35 senior engineers, engineers and technicians, and has successively obtained ISO9001 Quality system certificates,  API 5CT certificate authorized by American Petroleum Institute and BV Quality supplier evaluation certificate issued by company of France. Owing more than 30 independent intellectual property rights, forming an industrial chain integrating design, development, manufacturing, testing and experiment of numerical control automation equipment for petroleum machinery products, which can meet customers' demand for products Full cycle service.
The company has established the “Dong Fang Yunlong E-commerce Trading Platform" with oil drilling and production equipment and tools as the radiation point, improved the ability of Internet cross-border e-commerce, and completed the transformation of enterprise from internal operation to building industry alliance. It has built an intelligent workshop, expanded the support of intelligent manufacturing for enterprise operation, created a new intelligent manufacturing mode with high efficiency and flexibility, and improved the core competitiveness of the enterprise. And successfully registered production and sales companies in the Netherlands, opening a new starting point for overseas investment and development.
In the future, Dongfanglong will closely focus on national policy orientation and innovation driven development strategy, formulate sustainable development transformation strategy, keep forging ahead, take creating world famous brand and winning honor for the nation as the goal, work together with people of insight from all walks of life for win-win cooperation, and build up the dream of oil equipment manufacturing.

authentication certificate：

Contact me:
Con tact: chendongfanglong@ 163.com 
Wha tsApp: +86 183 3933 3686