These are seamless steel pipes specifically designed for oil and gas wells. They are lowered into the wellbore during drilling and cemented in place to support the well wall, prevent soil collapse, separate different pressure layers, prevent fluid leakage between layers, and withstand high pressures underground. They serve as the fundamental wellbore barrier for maintaining long-term production in oil and gas wells.
Product specifications: 4-1/2” to 20”.
Steel grades: H40, J55, K55, L80, R95, N80-1/Q, C90, T95, C110, P110, Q125.
API 5CT steel-grade casing is available, with various thread types including short round threads SC, long round threads LC, and skewed trapezoidal threads BC. The product dimensions cover all the outer diameters and wall thickness specifications specified in the API 5CT standard.
Conical angle 1:16, 60° round teeth.
Short engagement length.
Widely used in shallow wells, surface casing, and low-pressure wells.
The tooth profile is identical to a round thread, with a longer thread.
Better tensile strength and sealing properties compared to SC.
Standard selection for medium to deep wells.
Trapezoidal teeth with high load-bearing capacity.
Resistance to tensile force, compression, and sliding is superior to that of round threads.
Main choice for medium-deep wells, high-pressure wells, technical casing, and production casing.
Compliant with API 5CT specifications, the threads, steel grades, and dimensions are uniform, making them suitable for use worldwide in oil and gas fields. They exhibit good interchangeability and make it convenient to select coupling.
High-quality alloy steel is used, with stable metallurgical composition and uniform microstructure after heat treatment, meeting the requirements for strength and toughness.
The lengths of individual rods are uniform, and they have an appropriate weight. They enable quick well-drilling and operation operations, and are easy to construct.
We have been deeply involved in the production of petroleum pipe materials for an extended period, possessing advanced equipment and large-scale production capabilities. Our product quality is stable and reliable.
The manufacturing process and production capacity are mature and stable, offering high value for money.
Our team of professional technical service experts is available 24/7 to provide on-site technical support for pipe installation work, helping to ensure the long-term efficient operation of equipment.
