Rock bullet Drilling Tools Drilling Rock Auger Pile Foundation Rotary Drilling Rig Conical Auger

（2）Straight Auger:

A、Straight Auger with flat teeth :Double-headed double screws are suitable for sandy soil and small-diameter gravel layers with poor cementation; double-headed single screws are suitable for sandy soil and soil layers; single-headed single screws are suitable for large-diameter pebbles with poor cementation, clay soil and hard clay.

Construction Foundation Drilling Rig Tools Core Drilling Barrel Straight Auger For Gravel Layer

B、Straight Auger with bullet teeth : There are double screws, triple screws and quadruple screws, suitable for hard bedrock or pebbles.

2. Drilling bucket

According to the installed teeth, it can be divided into drilling bucket with bullet teeth and drilling bucket with soil teeth; according to the number of bottom plates, it can be divided into double bottom drilling bucket and single bottom drilling bucket; according to the number of door openings, it can be divided into double door bucket and single door bucket; according to the taper of the cylinder, it can be divided into conical drilling bucket and straight drilling bucket. The above structural forms are combined with each other, coupled with the change of whether there is a ventilation hole and the opening mechanism, dozens of kinds of rotary digging drill buckets can be combined. Generally speaking, the double bottom sand hopper is suitable for a wide range of strata, the single bottom is only suitable for a strong viscous soil layer, the double door drill bucket is suitable for a wide range of strata, and the single door drill bucket is only used for large diameter pebbles and hard mud.

Boring Piling Equipment Double Revolving Bottom Drilling Bucket With Rock Teeth

3. Core barrel