Kelly Bar swivel joints for metal structures, upper and lower joints, intermediates, etc. all use high-quality alloy steel, after fine processing, and strict heat treatment, so that its comprehensive mechanical properties are superior, super wear-resistant, long service life.

The internal bearings are all made of industry-special high-quality bearings, excellent performance, group pairing.

The sealing components all use high sealing performance parts, corrosion resistance, not easy to age, to ensure that the bearing cavity grease does not easily leak, and the outer mud debris does not easily enter the bearing chamber, to ensure the normal operation of the bearing.

The grease can be replaced regularly, the grease will not be used for a long time, resulting in temperature deterioration, thereby extending the service life of the lifter.