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

Jinzhou Shitan Machinery Equipment Co., Ltd. Main Products：

Pneumatic Drilling Rig / Air Drilling Rig（ST-180, ST-200, ST-260, ST-300, ST-350, ST-400, ST450, ST-450, ST-500, ST-600, ST-800 and other Pneumatic water well drilling Rigs.）, Crawler Water Well Drilling Rig / Trailer Mounted Drilling Rig / Water Well Drilling Rig / Hydraulic Borewell Machine / Hard Rock Drilling Equipment / Diamond Core Drill Rig / Geological Drilling Rig / Soil Testing Drilling Rig / Portable Water Well Drilling Rig（ST-30，ST-50，XY-1A, XY-1B, XY-2, XY-2B, GK180, GK200, GY150, GY200 and 30 impact drill rig, ZLJ series tunnel drilling rig and other geological drilling machines）Crawler Track Undercarriage, Drilling Mud Pump（BW150,BW160,BW200,BW250,BW850 series Drilling mud pumps）, Drilling Air Compressor, Water Well Drill Bits（PDC Drill Bit， Tricone Bit， DTH Button Bit）, Water Well Drill Pipe, Drilling Rig Spare Parts( drilling rods , drilling rods joint , casing pipe, casing coupling, core tube, core tube coupling, lifters, automatic drop hammer, sampler, SPT tool, wrench fork, pad fork, lock joint), Track Transporter

OEM / ODM can accept. Good quality, professional after-sales service, welcome to order