API 5CT/ISO9001/APISpec5B/ASTM/ISOANSI-NACE/API Bull 5C3/ASNT SNT-TC-1A:1984/IADC/SPE 11396

Shaft coupling

The couplings manufactured by Tianjin Dasheng Petroleum Equipment Co. are the key components for connecting pipelines and casing. The sealing performance and reliability of the coupling directly affect the safety and efficiency of downhole operations. Our couplings are highly appreciated in the domestic and overseas markets for their high quality, diverse specifications and quick delivery.

Full range of specifications

We offer a wide range of coupling sizes, including

23/8" (2.875" OD)

27/8" (3.5" OD)

31/2" (4.0" OD)

41/2" (4.5" OD)

65/8" (7.0" OD)

85/8" (8.625" OD)

103/4" (10.75" OD)

133/8" (13.5" OD)

16" (16.0" OD)

20" (20.0" OD)

Versatile steel grades

We offer a wide range of steel grades from normal to high strength, including J55, K55, N80, L80, P110, L803CR, 9CR, 13CR, etc., to meet different geological conditions and mining requirements.

High quality standards

All couplings are manufactured in strict compliance with API standards and are certified under the ISO 9001 quality management system. The company uses advanced production equipment and a strict quality control system to ensure that the thread accuracy and dimensional tolerances of the couplings meet international standards.

Customized service

We are able to manufacture special couplings to customer specifications or machine special threads and connections on couplings to meet customers' specific requirements.

Applications

The couplings are often used in

Onshore and offshore oil production

Pipe connections in deep and high pressure wells.

oil and gas production in high hydrogen sulphide environments

Pipe connections in oil field development and production processes

Product advantages

High strength and toughness: Ensures reliability under high pressure and in complex environments.

Excellent sealing properties: Advanced thread design and processing technology.

Corrosion resistance: Suitable for use in corrosive environments with high hydrogen sulphide content.

Customized service: To meet specific customer requirements.