DTH ST-B Carbide 17 1/2 Inch Water Well Drill Bits

DTH Drilling Tools With Carbide Inserts Step Drag Water Well Drill Bits

1. Description

Step Drag Bits also named blade bits, with a Tungsten Carbide inserts on the blades.

They are usually designed for use in soft formations such as sand, clay, or some soft rock.

Three wings step drag bits:

A. Drag bits are made according to API standard or no thread standard just welding

B. Various step and chevron drag bits are available from 3 inch to 17 1/2 inch. (normal small size are 3”,3 3/4”,3 7/8”,4 3/4”,4 5/8”,5 7/8” and so on)

C. There is very good feedback from our customers because of the quality and price.

D. Different drag bits can be made according to your drawings or samples.

2. Applications for the drag bits

Their uses include drilling water wells, mining, geothermal, environmental and exploration drilling.

Whenever possible, they should be used to drill pilot holes, for they produce cuttings are easiest to log.

3. Types of drill drag bits

Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples. Many special designs are available upon your request.

4. Main Features

• Adopting advanced technique and mature process to manufacture.
• Drilling speed is high in soft to medium hard rocks.
• Have long service life.
• Suit with hydraulic drilling rig.
• Wear resistance and high impact toughness