We, KUNDA PETROLEUM EQUIPMENT, can offer a full line of sucker rod couplings in compliance with API 11B standard, including conventional Sucker Rod Coupling, Sub-coupling, Slim Hole Coupling, Spray-Metal Coupling and Polished Rod Coupling. 

We can provide Ulta High Strength Couplings made of AISI 4135/4140 for hash well conditions as well.