Our company's development so far depends on the continuous innovation of technology, the continuous updating of Telescopic Cylinder Barrel, Hydraulic Cylinder Rod, 4140 drilling tube and the more enthusiastic service, which has won the trust and support of Haitong products from our customers. We firmly believe that 'continuous customer satisfaction' is the key to enterprise development, so we take the lead in using advanced customer service solutions and establishing industry-leading quality service standards to achieve customer satisfaction and reputation. Before export of the hair there is strict top quality control check during treatment as per international good quality standards. The precision and stability of the products explain the high quality of our company and ensure the maximum realization of customers' interests. To achieve mutual success, we will make our best efforts to build a solid co-operation and transparent communication work with our companions.
Introduction
Steel Tube Coupling is a kind of drilling tool in oil field, which i$ mainly used for tubing connection. The tubing coupling mainly solves the problem of fatigue fracture of existing coupling due to stress concentration.
Technical Parameter
Specification range | ||
OD | 42.16 MM - 508 MM(1.66"-20") | |
Materials | H40, J55, K55, N80-1, N80-Q, L80-l,L80-9Cr, L80- 13Cr, PI 10, Q125 | |
Executive standards | API 5CT, GB, IS011960, GOST | |
Thread connection | EUE, NUE, STC, LTC, BTC and Premium connection | |
Testing | NDT etc related rules of API 5CT and SB | |
Type | seamless |
Component composition
The tubing coupling structure is that the tubing end and the inner wall of the coupling body are connected by tapered thread, and the end of the coupling body and the tubing are connected by the same thread and the same pitch horizontal thread.
Equipment characteristics
The utility model has the characteristics of alleviating the stress concentration at the root of the outer thread of a single conical thread connecting tubing, and is not easy to produce fatigue fracture, and has good connection effect. Effective prevention of tubing string break-off accident.

Continuous innovation and advanced technology enable the company to always be at the forefront of the Stainless Steel Pipe/Tube Coupling Hardware Casting Bar Fitting and lead the development of the industry. Our perfect mechanism enables everyone with ideal and ability to give full play to their own positions and realize their self ambition. Our corporate culture innovation has become a powerful driving force to promote the development of our company.
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