Application:

This group of products is used to penetration the degassing hole, drain hole,and grouting hole of coal mine. Or for the purpose of geology, coalfield, metallurgy, building, mining, project survey, rail, bridges, housing, especially on well drilling.

Characteristics:

Compared with the others, this one has a higher abradability, with fast penetration rate, high efficieney and wide range of application, and specially for the large diameter holes drilling.

Applicable rock formation: f≤12, it's suitable for drilling in soft and oft-medium formation.

Type: Ordinary; Reinforce type; Super strength type.

Threads: Any females or male threads.

Size: