China Concave Coreless PDC Bit Factory 216mm Drilling Tool Suppliers

Premium 216mm Concave Coreless PDC Bit from a leading China factory. Ideal suppliers for drilling in soil layer, loose rock, weathering layer, shale, soft limestone, and marble.

SupplierHEJIAN YINRUH DRILL BIT MANUFACTURE CO., LTD.www.yhrockdrill.com

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About this product

Product information from the supplier.

The 8 1/2 Inch (216mm) Concave Coreless PDC Bit is a high-performance drilling tool engineered with premium Polycrystalline Diamond Compact (PDC) cutting edges. Designed for maximum durability and efficiency, this bit features a 5-blade configuration that provides exceptional strength, wear resistance, and impact stability, making it an ideal choice for challenging geological environments.

Specifically optimized for soft to medium-hard rock strata, this coreless bit is versatile enough for geological exploration, coal seam excavation, and oil and gas drilling. By combining a forged body with advanced concave geometry, it ensures rapid penetration rates and cost-effective operation across various formations, including shale, limestone, and marble.

Detailed Parameters

Outside Diameter	8 1/2 inch (215mm/216mm)	Number of Blades	5 Blades
Cutter Count	35pcs teeth	Body Material	Forged Body
Thread Type	Pin (Customizable)	Bit Type	Concave Coreless PDC
Applicable Strata	Grade 1 to 7 (Soft to Medium-Hard)	Connection	Customized as per requirement
Common Sizes	46mm to 325mm range	Custom Threads	42/50/60/73/76/89 available

Key Advantages

Extreme Durability

Forged body construction combined with PDC cutters offers superior impact resistance and wear life.

High ROP

Optimized concave design increases the Rate of Penetration (ROP) in soft to medium-hard formations.

Versatile Application

Suitable for geological exploration, coal mining, and oil/gas field drilling operations.

Cost-Efficiency

Balances high-end performance with competitive pricing to lower overall drilling costs per meter.

Wide Adaptability

Effectively drills through soil, loose rock, weathering layers, shale, and limestone.

Custom Engineering

Available in various diameters and thread specifications to match your specific rig requirements.

Product Gallery

Management Platforms

Inventory Control

Real-time tracking of PDC bit stock levels to ensure zero downtime for your drilling projects.

Tool Optimization

Technical support to select the ideal blade count and cutter size based on strata analysis.

Performance Monitoring

Analyzing wear patterns to extend the operational life of your drilling consumables.

Quality Assurance

Strict adherence to international oilfield and mining standards for every forged bit.

Custom Order Flow

Streamlined process for customized thread and diameter specifications for specialized rigs.

Logistics Efficiency

Global shipping coordination to ensure your equipment reaches the site on schedule.

Investment Return Comparison

Performance Metric	Standard Tricone Bit	Concave PDC Bit	Efficiency Gain
Drilling Speed (ROP)	Moderate	High	+40% to 60%
Tool Lifespan	Short (Wear prone)	Long (High resistance)	2x - 3x Life
Replacement Frequency	High	Low	Significantly Lower
Operational Cost	High (Due to trips)	Low (Fewer trips)	Reduced OpEx
Strata Versatility	Specific to Hard Rock	Soft to Medium-Hard	Broadened Range

Frequently Asked Questions

Q: What are the primary applications for the Concave Coreless PDC Bit?

These bits are primarily used in geological exploration, coal seam drilling and excavation in mines, and oil and gas field drilling, specifically for soft to medium-hard rock layers.

Q: Which rock strata are most suitable for this 216mm PDC bit?

It is designed for Grade 1 to 7 strata, including soil layers, loose rock, weathering layers, shale, medium-hard limestone, and marble.

Q: Can the thread and diameter be customized for my specific drill rig?

Yes, we offer extensive customization. Common threads like 42, 50, 60, 73, 76, and 89 are available, and diameters can be customized from 46mm up to 325mm.

Q: What makes the forged body better than other alternatives?

The forged body provides superior structural integrity, higher impact resistance, and better support for the PDC cutters, preventing premature failure in tough formations.

Q: How does a "coreless" design benefit the drilling process?

Coreless bits are often more cost-effective and provide efficient cuttings removal in specific geological exploration and mining tasks, reducing the risk of clogging.

Q: Why choose PDC bits over Roller Cone bits for medium-hard strata?

PDC bits generally offer a higher rate of penetration and a longer operational life because they shear the rock rather than crushing it, leading to fewer tool changes.