Pup Joints
Standards: API 5CT and 5B J55,K55,N80-1,N80-Q,P110, C95
Sizes: Tubing Coupling : 2-3/8'' - 4-1/2'' Casing Couping : 4-1/2'' - 20' Length: 2, 3, 4, 6, 8, 10, 12 ft
Specification Range: 2-3/8INCH to 20INCH
Materials: J55, K55, N80, L80, C90,T95, P110 and Q125
T&C: EUE, NUE, STC, LTC, BTC and Premium connection
Type: PIN*PIN, PIN*BOX
Testing: NDT Etc Related Rules of API 5CT and 5B
Packing: By Bundles, Seaworthy Packing
Application: Connecting Two Oil Tubing or Casing Pipes
Pup joint is used be adjust height of tubing or casing strings or depth of down-hole tools, and these pup joints are made of seamless steel pipes. Pup joint can be available with tubing pup joint or casing pup joint, and material for pup joint can be avalialbe in J55, K55, N80, L80 or P110, sizes of tubing pup joint range from 2⅜¡± to 4½¡±, and casing pup joint range from 4½¡± to 13⅜¡±, thread of pup joint can be 8RD, 10RD or BTC, length of tubing pup joint are often offered in 2ft, 3ft, 4ft, 6ft, 8ft, 10ft and 12ft, length of pup joint for special purpose can be available as per order. Pup joints are machined with interchangeable Pin & Box thread on two ends or other configuration, one end is equipped with coupling, and another end is protected with closed end thread protector. Nominal weight of tubing pup joint is the same as tubing, and casing pup joint is the same as casing.
Tubing pup Joint
Tubing pup joints are desiged and manufactured as per API 5CT to be used be adjust height of tubings, and tubing pup joints are made of seamless steel tubings. Material grade of tubing pup joint can be avalialbe in J55, K55, N80, L80 or P110, sizes of tubing pup joint range from 2⅜¡± to 4½¡±, thread of pup joint can be 8RD, 10RD or BTC, and end connection types can be NUE and EUE. length of tubing pup joint are often offered in 2ft, 3ft, 4ft, 6ft, 8ft, 10ft and 12ft, length of pup joint for special purpose can be available as per order. Tubing pup joints are machined with interchangeable Pin & Box thread on two ends or other configuration, one end is equipped with coupling, and another end is protected with closed end thread protector. Nominal weight of tubing pup joint is the same as tubing. Tubing pup joints are internally and externally hydrostatic tested with tension and compression loads, and torque tested, electromagnetically inspected, pup joint is full-body drift and straightness visual inspected, and phosphated and dye-penetrant inspected. and finally painted by machine to ensure excellenct appearance. Finished tubing pup joints are often packed by steel belts in bundles, and then fixed in steel rack for easy transportation.
Casing pup joint
Casing pup joints are desiged and manufactured as per API 5CT to be used be adjust height of casings, and casing pup joints are made of seamless steel casings. Material grade of casing pup joint can be avalialbe in J55, K55, N80, L80 or P110, sizes of casing pup joint range from 4½¡± to 13⅜¡±, thread of pup joint can be 8RD, 10RD or BTC, length of tubing pup joint are often offered in 2ft, 3ft, 4ft, 6ft, 8ft, 10ft and 12ft, length of pup joint for special purpose can be available as per order. Casing pup joints are machined with interchangeable Pin & Box thread on two ends or other configuration, one end is equipped with coupling, and another end is protected with closed end thread protector. Nominal weight of casing pup joint is the same as casing. Casing pup joints are internally and externally hydrostatic tested with tension and compression loads, and torque tested, electromagnetically inspected, pup joint is full-body drift and straightness visual inspected, and phosphated and dye-penetrant inspected. and finally painted by machine to ensure excellenct appearance. Finished casing pup joints are often packed by steel belts in bundles, and then fixed in steel rack for easy transportation.
Features
Transportation or piping systems that carry fluids, slurries or gasses under pressure or vacuum at varying temperatures.
Reduction of vibration.
Dampen sound transmission.
Compensate movements due thermal changes, misalignments caused by wear, load stresses, settling of supporting foundations.
Molding production with long radius arch.
Standard measures (length).
Advantages
Easy installation, flanges can be rotated.
For installation with “torsional misalignments”.
Flanges are not in contact with medium, which enables lower grade material.
Galvanic surfaces/ coatings possible.
Gaskets can be eliminated.
Additional movement capabilities.
Self cleaning arch (no need filler material).
Economic.
Casing Pipe Manufacturing Process:
Steel ingot heating → hydraulic punching → reheating → extension → periodic rolling → reheating → sizing → cooling → straightening → pipe cutting → inspection
1. An annular heating furnace is required for ingot heating;
2. Punching and reheating with hydraulic press;
3. The oil casing plant uses a two-roller guide plate extension machine for extension;
4. Re-use a disc heating furnace for periodic rolling, and use a non-entry furnace for reheating, cooling, straightening, pipe cutting, and inspection.
Color Codes for API 5CT Casing and Tubing:
Process Flow
