Type：

1，Interlocking kelly bar.

2，Friction kelly bar.

3，Full locking kelly bar.

4，Combined kelly bar.

Advantages：

1，Top quality of steel tube, welding wire, drive key and kelly stub etc. ST52, 35Crmo, Hardox500, forged technology are making reliable Kelly bar.

2，Special heat treatment, robot welding machine, leveling adjustment platform are making high strength Kelly bar.

3，Rich experiences, perfect design and customized services will making the suitable kelly bar for you.

4，Online and site Services

Features：

1，Kelly box 130mm/150mm/200mm/250mm customized.

2，Cutting ring with staggered arrangement of roller bits.

3，Easy replacement of roller bits.

4，Around wearing strips.

Production Process：

Parameters：

Cases:

Packing and delivery：