Send Inquiry
We supply all range of couplings as per API specifications in all groups for casings and tubing. Our couplings conform to specifications set by American Petroleum Institute (API). Tubing coupling from 1.9” to 4-1/2”, Casing coupling from 4-1/2” to 13-3/8”,under grades H-40, J-55, K-55, L-80, N-80, P-110 ,Q125 etc.http://www.dlpoctg.com
