American Cap Company Seamless Coupling Products
American Cap Company, a division of PTR Group, manufactures two types of seamless coupling products including API – 5L and API – 5CT for the natural gas and oil industries. A seamless coupling is a very short length of pipe or tube with pipe threads at one or both ends that allows two pipes of equal or different sizes to be joined. These seamless couplings help to extend or cease pipe runs, change the pipe size, and repair a broken or leaking pipe. Seamless couplings are a quick method of connecting different pipe sections while maintaining the reliability of the pipes.
We offer semi-premium and premium seamless couplings. We can make any custom connections.
At American Cap Company, we offer the following customization options to indicate special material grades for couplings as well as applications.
- Coupling Color
- Stripes
- Stenciling
- Pin Marking
API – 5L Seamless Couplings
- Used in the natural gas and oil industries
- Covers seamless and welded steel-lined pipes
- Carbon steel grades
- Resistance to cracking forces
- Inexpensive with long service life
API – 5CT Seamless Couplings
- Provides standards for casing and tubing for the natural gas and oil industries
- Steel grades
- Seamless fittings
- Ranges in coupling sizes and dimensions
API Grades
- API GRADES
- GRADE
- TYPE
- PSL1
- PSL2
- H40
- —-
- X
- J55
- —-
- X
- K55
- —-
- X
- N80
- 1
- X
- N80
- Q
- X
- R95
- —-
- X
- C110
- —-
- X
- C90
- —-
- X
- L80
- 1
- X
- L80
- 13Cr
- X
- L80
- 9Cr
- X
- T95
- —-
- X
- P110
- —-
- X
- Q125
- —-
- X
Coupling Size Table
- API CASING COUPLINGS
- Casing Size OD
- STC
- LTC
- BTC
- EUE
- 1.9
- X
- 2 3/8
- X
- 2 7/8
- X
- 3 1/2
- X
- 4
- X
- 4 1/2
- X
- X
- X
- X
- 5
- X
- X
- X
- 5 1/2
- X
- X
- X
- 6 5/8
- X
- X
- X
- 7
- X
- X
- X
- 7 5/8
- X
- X
- X
- 8 5/8
- X
- X
- X
- 9 5/8
- X
- X
- X
- 10 3/4
- X
- X
- X
- 11 3/4
- X
- X
- X
- 13 3/8
- X
- X
- X
