15T 20T 25T 30T 40T 50T Swivel Joint Kelly Bar Tool For BG24 BG36 SR360 XR400 AF180 HR180 piling rig parts
Swivel is made of metal junction structure, the upper and lower joint part, intermediates and other parts are completely made of high quality forged alloy steel. Going through strict heat treatment after roughing process, then adopts refined processing, which make the swivel with perfect comprehensive mechanical property, strong wear-resistant and long life.
