





Flat Top PDC Drag Bit for Grouting, Water Well & Geothermal Drilling
Size: 65–171 mm
Application: Grouting / Gas Drainage / Water Well / Geothermal
Formation: Medium-Hard Intact Rock
Structure: Flat Top / Non-Coring
PDC Cutter: 1308 PDC Cutters
Customization: Size / Thread / Cutter Layout / Reinforced Design
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Description
Flat Top PDC Drag Bit for Non-Coring Drilling
Flat Top PDC Drag Bit is designed for non-coring drilling applications that require stable cutting performance and high wear resistance. Manufactured with a durable alloy steel body, this bit can be equipped with different PDC cutter configurations according to rock hardness and drilling conditions, providing reliable drilling performance in medium-hard intact formations.
Available in 65 mm to 171 mm sizes, with customized thread connections and PDC cutter layouts.
Size 65–171 mm | Structure Flat Top / Non-Coring | Formation Medium-Hard Intact Rock |
Application Grouting / Gas Drainage / Water Well / Geothermal | PDC Cutter 1308 PDC Cutters | Customization Size / Thread / Cutter Layout / Reinforced Design |
Stable cutting, high wear resistance
Six design advantages behind the Flat Top PDC Drag Bit.
01 / 06 Flat Top Non-Coring StructureThe flat top design provides stable drilling performance and efficient rock contact during non-coring drilling. | 02 / 06 Durable Alloy Steel BodyManufactured with a wear-resistant alloy steel body for longer service life under demanding drilling conditions. | 03 / 06 Flexible PDC Cutter ConfigurationDifferent PDC cutter combinations can be matched according to rock hardness and drilling requirements. |
04 / 06 Suitable for Medium-Hard FormationsDesigned for limestone, dolomite, sandstone, coal seams and other relatively intact medium-hard formations. | 05 / 06 Multiple Thread OptionsDifferent female thread connections can be manufactured according to drilling rigs and drill rods. | 06 / 06 Custom Sizes AvailableStandard sizes are available from 65 mm to 153 mm, with 171 mm customized size available on request. |
Used across grouting, gas drainage and water well drilling
This flat top PDC drag bit is suitable for grouting holes, gas drainage drilling, water well drilling and geothermal drilling. Other applications include engineering construction drilling and general non-coring drilling projects.
01 Grouting HolesStable hole formation for grouting and foundation support projects. | 02 Gas Drainage DrillingReliable drilling in coal seams and gas drainage boreholes. |
03 Water Well DrillingStable penetration for efficient borehole advance in medium-hard formations. | 04 Geothermal DrillingEfficient penetration for geothermal borehole and energy projects. |
Suitable Rock FormationsSuitable for medium-hard and relatively intact formations. Different PDC cutter configurations can be selected according to formation hardness and abrasiveness.
⚠️ Note: Actual drilling performance depends on rock hardness, abrasiveness, fractures, drilling parameters, cutter selection and operating conditions. | ||||||||
Multiple PDC cutter options available
Different PDC cutter configurations are available according to drilling conditions.
Standard Standard 1308 PDC CuttersSuitable for general drilling in medium-hard formations. | Reinforced Reinforced Cutter ConfigurationRecommended when better wear resistance and stronger cutting support are required. |
Heavy-Duty Oil-Grade / Heavy-Duty PDC OptionsSuitable for more demanding drilling conditions, depending on formation hardness and drilling parameters. | |
Standard sizes and PDC cutter configurations
Standard sizes from 65 mm to 153 mm. 171 mm and other custom sizes are available on request.
| Bit Size | Typical Thread Options | PDC Cutter Quantity | Approx. Weight |
|---|---|---|---|
| 65 mm | 42 / 50 Female Thread | 5 PCS / 1308 | 1.4 kg |
| 75 mm | 42 / 50 Female Thread | 6 PCS / 1308 | 1.7 kg |
| 91 mm | 42 / 50 / 60 / 63.5 / 73 / 76 Female Thread | 7 PCS / 1308 | 3.1 kg |
| 113 mm | 42 / 50 / 60 / 63.5 / 73 / 76 Female Thread | 10 PCS / 1308 | 5.5 kg |
| 133 mm | 42 / 50 / 60 / 63.5 / 73 Female Thread | 13 PCS / 1308 | 6.5 kg |
| 153 mm | Customized Female Thread | 17 PCS / 1308 | 12.0 kg |
| 171 mm | Customized | Customized | Customized |
How to select the right flat top PDC drag bit
To recommend a suitable configuration, please provide the following information. Our engineers will respond with a factory quotation within 24 hours.
01 Required Diameter 65 / 75 / 91 / 113 / 133 / 153 / 171 mm | 02 Rock Formation For example: limestone, dolomite, sandstone or coal seam. | 03 Drilling Application Grouting / gas drainage / water well / geothermal |
04 Thread Connection Please provide the thread type or send us a photo of your existing drill rod. | 05 Drilling Rig or Drill Rod Information Please provide drilling rig model or drill rod specification for thread matching. | |
OEM & ODM customization for drilling projects
Every drilling project is different. Chenghui Drilling customizes each bit based on your project data — from PDC cutter layout to thread connection.
Rock formation, drilling rig, drill rod and drilling parameters all affect drill bit performance. Our engineering team works with your technical data to recommend the most suitable PDC cutter configuration and thread connection.
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Professional drilling tools manufacturer in China
Chenghui Drilling Co., Ltd. specializes in the design, production and supply of PDC drill bits, tricone drill bits, DTH drilling tools and related drilling equipment for customers worldwide. Every drill bit is manufactured and inspected in our own factory, ensuring stable quality, competitive pricing and reliable delivery for international drilling contractors and distributors.
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Need a customized Flat Top PDC Drag Bit?
Share your drilling requirements with our engineers. We will recommend a suitable PDC cutter configuration and thread connection, and provide a factory quotation within 24 hours.
| 1. Required Diameter | 2. Rock Formation |
| 3. Drilling Application | 4. Thread Connection |
FAQ
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What is a Flat Top PDC Drag Bit?
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What applications is this bit suitable for?
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What rock formations are suitable?
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What sizes are available?
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Can you customize the bit configuration?
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Downloads
| File | Download |
|---|---|
| CNC-Machining-Center.pdf | Download |












