1/2 Inch Water Well Drill Bits DTH ST-B Carbide 17
carbide well drill bit
,carbide water well drill bits
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1/2 Inch Water Well Drill Bits DTH ST-B Carbide 17
DTH Drilling Tools With Carbide Inserts Step Drag Water Well Drill Bits
1. Description of Water Well Drill Bits
Step Drag Bits also named Water Well Drill 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.
| Bit Type | Bit OD (mm) | Thread Connection | Main Material | IADC / Cutter Spec | Applicable Formation |
|---|---|---|---|---|---|
| PDC Drag Bit | 76 mm | 2 3/8" API REG PIN | Steel body+PDC cutter 1313/1613 | 3/4 wings | Soft/medium: clay, sand, mudstone, soft limestone |
| PDC Drag Bit | 89 mm | 2 3/8" API REG PIN | Steel body+PDC 1613 | 3/4 wings | Soft/medium rock |
| PDC Drag Bit | 110 mm | 2 7/8" API REG PIN | Steel body+PDC 1616 | 4/5 wings | Medium sandstone, limestone |
| PDC Drag Bit | 133 mm | 2 7/8" API REG PIN | Steel/Matrix body+PDC1913 | 4/6 wings | Medium/hard abrasive strata |
| PDC Drag Bit | 152 mm | 3 1/2" API REG PIN | Matrix body+PDC1916 | 5/6 wings | Medium/hard rock |
| Tricone Bit | 118 mm (4 5/8") | 2 7/8" API REG PIN | Alloy steel + TCI insert | IADC 217/317 | Medium/hard sandstone, shale |
| Tricone Bit | 133 mm | 2 7/8" API REG PIN | Alloy steel + TCI insert | IADC 437/517 | Hard limestone, dolomite |
| Tricone Bit | 152 mm | 3 1/2" API REG PIN | Alloy steel + TCI insert | IADC 517/537 | Hard granite interbeds |
| Tricone Bit | 171 mm | 3 1/2" API REG PIN | Alloy steel + TCI insert | IADC 537/617 | Very hard mixed formation |
| DTH Button Bit | 90 mm | DHD340 / BR3 shank | 42CrMo+Tungsten carbide button | 3 inch hammer bit | Hard granite, basalt, quartzite |
| DTH Button Bit | 110 mm | DHD340 / QL40 shank | 42CrMo+carbide button | 4 inch hammer bit | Hard rock |
| DTH Button Bit | 130 mm | DHD350 / QL50 shank | 42CrMo+carbide button | 5 inch hammer bit | High/hard rock |
| DTH Button Bit | 152 mm | DHD360 / QL60 shank | 42CrMo+carbide button | 6 inch hammer bit | Extra/hard bedrock |
2. Applications for Water Well Drill 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 Water Well Drill 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.
| Product name | Drag bits |
| Type | 3 wings/4wings/5wings |
| Sizes | 3 inches to 17 1/2 inch |
| Applications |
Water well drilling,mining,geothermal, environmental and exploration drilling. |
| Soft condition | Sand,clay,or some soft rock |
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
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One Man Diesel Water Well Drilling Rigs For Foundation Survey
One Man Diesel Water Well Drilling Rigs for foundation survey and shallow water well drilling. Features 13.2KW diesel power, 35-150m drilling depth, hydraulic feed, multi-speed spindle, and portable design. Includes overseas engineer support and video technical assistance. -
Mini Steel Hydraulic Rotary Drilling Machine Factory Direct Supply
XY-1 hydraulic borehole drilling machine offers max 100m depth, compact structure for easy transport, and stable hydraulic system for reliable performance in soil, soft rock, and medium-hard rock. Supports core drilling, sampling, and shallow water wells with low failure rate and minimal maintenance. -
Small 15kw Hydraulic Borewell Machine With Max 300mm Diameter
Small 15kw Hydraulic Borewell Machine with max 300mm diameter. Features 200m depth capacity, hydraulic feed system, wheeled mobility, and pressure gauge monitoring. Ideal for water well drilling, soil testing, and exploration applications with 16.5KW diesel power.