OCTG Pipe/Coupling/Pup Joints
As we know, the coupling of steel pipes is a pipe or short pipe with threads on both ends and is used to connect pipes. The API coupling plays an important role in the connection of pipes and casings, since it requires more rigorous manufacturing processes than normal steel couplings. The recommended standard is API 5B.
Item Name: Oil Casing/Tubing Coupling Pipe.
Brand: HOLIC®.
Coupling Pipe Sizes: Out Diameter: 1.66″- 20″
Type: Seamless
Materials & Grades: API 5B H40, J55 / K55, N80-1, L80-1, L80-9Cr, L80-13Cr, P110, Q125.
Connections:
- P (Plain end)
- STC (short threads)
- LTC (long threads)
- BTC (buttress threads)
- Premium gas-tight connectors
- Non-upset ends (NUE)
- External upset ends (EUE)
- Premium gas-tight connectors
- Others special connectors
Product Description
OCTG Pipe/Oil Coupling Pipe Factory:
Holic Oil Pipeline Co., LTD.
Oil Coupling Pipe Basics:
The casing/tubing pipe coupling is a kind of oilfield drilling tool, which is mainly used for the connection of the oil pipe, and mainly solves the problem that the existing coupling easily generates fatigue fracture due to stress concentration.
The tubing coupling structure is: the tubing end is connected to the inner wall of the coupling by a taper thread, and the end of the coupling body and the oil pipe are connected by the same thread with the pitch flat thread. The utility model has the characteristics of alleviating the stress concentration of the root of the external thread of the single taper thread connection tubing, is not easy to produce fatigue fracture, and has good connection effect. Effectively prevent oil well pipe string breakage accidents.
The coupling is divided into a tubing coupling and a casing coupling. Commonly used steel grades are J55, K55, N80, L80, P110 and so on.
Main buckle type: NU (not thickened), EU (thickened), TBG (not thickened), UP-TBG (thickened) special buckle, etc. We can process various specifications, various lengths and various material couplings according to customer’s request order drawings.
Coupling material: J55, K55, N80, L80, C-90, C95, T95, P110, P110S, stainless steel, etc.
Our advantages:
As a leading brand of OCTG products in China, Holic® is working on providing high quality oil coupling pipe with most competitive price. Especially for the grades J55/K55, N80-1 and N80Q casing. Moreover, Holic® is engaged in providing various premium connection casing pipe, for the server working conditions.
