0 Piece，Product Price: US $ 0
| Quantity（piece） | 1 ~ 200 | >200 |
| Est. Time（days) | 15 | To be negotiated |
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Coupling
Tubing and casing couplings are the joining of two short length pipe, mainly used for the connection and repair of oil pipe and downhole tools
Tubing and couplings thread types : Non-upset thread(NU), External- upset thread(EU);
Casing and couplings thread types: Long-round thread(LC), Short-round thread(SC), buttress thread(BC)
Grade: K55,J55,N80-1,N80Q,L80-1,P110,etc.
Pup joint
Tubing and casing pup joints are machined according to the latest version of API SPEC 5CT. The steel grade includes J55,K55,N80-1,N80Q,L80-1,P110,etc. There are two types of thread widely used in tubing pup joint namely Non-upset thread(NU), External- upset thread(EU);
Casing and couplings thread types: Long-round thread(LC), Short-round thread(SC), buttress thread(BC).
Our testing and inspection method system is complete, using a whole set of thread instrument to inspect taper, pitch, tooth, height, tooth type,etc. The products have passed the identification of china petroleum pipeline. Quality supervision ,inspection and testing center and gained the unanimous praise from the customers.
Crossover
Crossover coupling any size ,length ,grade and weight is available on customer request.
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Tubing pup joints
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Specification
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API 5CT 2-3/8" ~ 4-1/2"
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Grade
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J55/K55/N80/L80/P110
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Thread
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EUE, NUE
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length
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As requested
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Casing pup joints
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Specification
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API 5CT 4-1/2" ~ 20
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Grade
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J55/K55/N80/L80/P110
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Thread
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LTC, STC, BTC
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length
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As requested
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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.
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