ELKAM supplies 5/8″, 3/4″, 7/8″ and 1″ sucker rods manufactured in accordance with API-11B standard of K, C, D and D spec. grades. We developed a unique product – sucker rod ShNK-29 of D grade with coupling diameter 54 mm which can be applied with 2 7/8” tubing by contrast with standard sucker rod 29. It allows to produce oil from the depth over 2500 meters.