Spiral Type Core Bit

The Spiral Type Core Bit is designed for efficient and stable core drilling in soft to medium-hard formations. Featuring a helical cutting structure, it ensures smooth penetration, effective cuttings removal, and reliable core recovery. This type of core bit is widely used in geological exploration, mineral investigation, and water well drilling where consistent drilling performance and easy maintenance are required.

The Spiral Type Core Bit is a widely used drilling tool in geological and mineral exploration projects. Its helical blade design allows continuous and smooth cutting while efficiently transporting drilling cuttings out of the borehole. Compared with traditional flat-type bits, the spiral structure reduces drilling resistance and improves penetration stability, especially in soft to medium-hard rock formations.
This type of core bit is particularly suitable for projects where stable drilling, simple operation, and consistent core recovery are required. Thanks to its optimized geometry and reinforced cutting edges, the bit maintains reliable performance even in complex geological conditions.

Helical Spiral Design
Ensures smooth cutting action and continuous removal of drilling debris.

High Penetration Efficiency
Optimized blade geometry improves footage rate while maintaining stability.

Excellent Cuttings Discharge
Spiral channels prevent clogging and reduce drilling interruptions.

Durable Cutting Structure
Manufactured using wear-resistant alloy materials for longer service life.

Wide Formation Adaptability
Performs well in soft to medium-hard formations such as limestone, shale, marl, and weathered rock.

Spiral Type Core Bits are widely applied in:
Geological exploration and core sampling
Mineral prospecting projects
Water well drilling
Engineering geological investigation
Shallow to medium-depth coring operations
Typical formations include:
Limestone, dolomite, carbonaceous limestone, shale, marl, gneiss, calcite, and moderately weathered granite.

Our spiral core bits are produced through a strictly controlled manufacturing process to ensure stable quality and consistent performance:
High-quality alloy steel body for structural strength
Precision machining to form accurate spiral geometry
Tungsten carbide reinforcement for enhanced wear resistance
Heat treatment to improve hardness and impact resistance
Final inspection on dimensions, concentricity, and cutting edge quality
Each bit undergoes quality checks before shipment to ensure reliable performance under real drilling conditions.

In a geological exploration project in Northwest China, drilling was carried out mainly in limestone and marl formations with partially weathered layers. Conventional core bits suffered from poor cuttings discharge and unstable penetration.

After switching to our Spiral Type Core Bit:

Cuttings were discharged smoothly

Drilling stability improved significantly

Core recovery increased by approximately 25–30%

Bit wear rate was noticeably reduced

The drilling team reported smoother operation and higher overall efficiency.