It supports the wellbore wall, isolates formations with different pressures, prevents collapse and fluid migration, serving as the structural framework of the wellbore.
Product Specifications: 4½″ to 20″
Steel grades: H40, J55, K55, M65, L80, R95, N80 1/Q, C90, T95, C110, P110, Q125
We provide users with sleeves compliant with all API SPEC 5CT standard steel grades and thread types, including H40, J55, K55, M65, L80, R95, N80 1/Q, C90, T95, C110, P110, and Q125 steel grades, covering all specified outer diameters, wall thicknesses, and thread configurations per the API SPEC 5CT standards.
Conical angle: 1:16,60° circular tooth
Short engagement length
Mainly used for shallow wells, surface casing, and low-pressure wells
The tooth profile is identical to that of a circular thread, with an extended thread length
Exhibits better tensile strength and sealing performance than STC
For medium-deep wells, conventional methods are typically selected
Trapezoidal teeth with strong load-bearing capacity
Exhibits significantly superior tensile, compressive, and anti-slip properties compared to round threads
The mainstream and preferred choices include medium-deep wells, high-pressure wells, technical casing, and production casing
Manufactured to standard specifications, globally interchangeable, easy to procure and maintain, with ample spare parts available.
The technology is mature, the cost is low, and the installation and removal of fasteners are simple.
The curved tooth base ensures stress dispersion, resistance to minor impacts, and effective stain retention with anti-adhesion properties.
Strictly adheres to the API 5CT standard, ensuring stable and reliable quality.
It offers a wide range of strength grades, from H40 to Q125, precisely meeting the requirements of various well depths and operating conditions.
A 50x digital projector enables more detailed inspection of thread profiles.
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