Specification :

Sizes range from 2 3/ 8" to 20"
Steel grades: J55, K55, L80, N80, C90, T95 and P110
We manufacture all range of couplings as per API specifications in all groups for casings and tubing. All of our couplings meet the American Petroleum Institute ( API) Specifications 5CT. The coupling are subjected to be phosphated to prevent rusting and coated on thread by VCI oil. The range of couplings extends from 2 3/ 8" to 20" , under grades H-40, J-55, K-55, L-80, N-80, C90, T95, P-110, Q125 etc.
We also provides all kinds of accessories of casing and tubing, like pup joints, nipples, cross overs , drift gauges etc.
API SHORT AND LONG THREAD CASING COUPLINGS

API EXTERNAL - UPSET TUBING COUPLINGS
Size Outside Length Threads Weight Quantity
( Pipe OD)
Inches Reg.& Spec. Bevel In. Spec. Clearance In. In
Inches Reg.& Spec. Bevel In. Spec. Clearance lb. Per Carton
1.900 2, 500 - 10 Round 1.85 - -
2-3/ 8 3.063 2.910 8 Round 3.42 2.38 1, 444
2-7/ 8 3.668 3.460 8 Round 5.27 3.42 792
3-1/ 2 4.500 4.180 8 Round 9.02 5.22 448
4 5.000 - 8 Round 10.62 - 392
4-1/ 2 5, 563 - 8 Round 13.31 - 252

API NON-UPSET TUBING COUPLINGS
Size Outside Length Threads Weight Quantity
( Pipe OD)
Inches Diameter Inches Length In
Inches Per Inch Per Piece( lb.) Per Carton
1.900 2.200 3-3/ 4 10 Round 1.23 1, 960
2-3/ 8 2.875 3-3/ 4 10 Round 2.82 1, 512
2-7/ 8 3.500 5-1/ 8 10 Round 5.15 800
3-1/ 2 4.250 5-5/ 8 10 Round 8.17 502
4 4.750 5-3/ 4 8 Round 9.57 392
4-1/ 2 5.200 6-1-8 8 Round 10.76 252