The API couplings for tubing and casing
Seamless Steel Coupling internally threaded cylider for joining two lengths of threaded pipe
Have all grade of API standard for thread also.
Size of Tubing: 2 3/8 " - 4 1/2"
Outside diamete: 60.3 – 114.3mm
Wall thickness: 4.83-6.88 mm
Size of Casing: 4 1/2 "- 20."
Outside diameter:114.3 - 508mm
Wall thickness: 5.21 – 16.13mm
Grade: J55 / K55/ N80 / L80 / P110,3CR,9CR,13CR
Standards: API 5CT
Type of connection:STC,LTC,BTC,Premium connection