Type：

1，Rock conical auger.

2，Rock flat auger.

3，Soil flat auger.

Application：

1，Moderately strong to strong rock (50 – 100 MPa)

2，Recommended in uncased bores or for larger diameters

Features：

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

2，Replaceable rock polit with B47K22H round shank chisels.

3，Progressive cutting edge with round shank chisels.

4，Wear protection: hard facing or wear strips

Production Process：

Parameters：

Cases:

Packing and delivery：