Trusted Diamond Core Drill Bit Supplier Worldwide
SENMINE — China Premium Custom Diamond Core Drill Bit Manufacturer
Senmine is a leading manufacturer and supplier of diamond core drill bits in China.
We specialize in custom core bits for drilling concrete, brick, and masonry.
Our full OEM and ODM services allow customization of diameter, length, segment design, interface, and color to meet diverse business needs.
Both dry and wet core drill bits are widely used by professional contractors and distributors around the world.
Wet Core Drill Bit
Senmine wet core drill bits work with water supply to reduce heat and dust, suitable for reinforced concrete, stone, and ceramic tiles. Compatible with bench-mounted or handheld core drilling machines for stable and precise drilling.
Dry Core Drill Bit
Senmine dry core drill bits are ideal for drilling without water, widely used for hollow concrete blocks, red bricks, and lightweight bricks. Compatible with angle grinders, handheld drills, and rotary hammers (with adapters) for flexible and efficient operation.
Universal Core Drill Bit
Senmine dry & wet core drill bits allow flexible switching between dry and wet drilling, suitable for concrete, masonry, and stone, balancing mobility and durability.
Why Senmine is right for You
Lifetime
Made with premium diamond segments and high-quality carbon steel tubes, each bit is precision-welded and rigorously tested to ensure even wear, low chipping, and a lifespan far exceeding that of similar products.
Drilling speed
The optimized segment formula, combined with precisely engineered cutting angles, greatly improves penetration speed, reduces cutting resistance, and enables rapid drilling to significantly shorten project time.
Cooling efficiency
optimized tube structure and debris-flute design effectively lower temperature during drilling, prevent segment burn-out, and extend tool life.
Strictly select raw materials
Drill tubes are made from high-strength carbon steel. Segments use a high-concentration blend of premium diamonds and metal bond—optimized through multiple trials to balance sharpness and wear resistance.
Procedure
We utilize laser welding and high-frequency welding, precisely matched to product applications, to ensure a strong bond between segments and tube—preventing detachment and delivering reliable performance in demanding construction environments.
Customizable
Full OEM/ODM flexibility — customizable crown/segment design, inner diameter, barrel length, arbor threading, flange/barrel finish and branding to fit various rigs and jobsite needs.
Precision Sizing & Dynamic Balancing
Rigorous quality control — dynamic balancing, segment strength tests and concentricity checks ensure dimensional accuracy, reduced vibration and reliable performance.
Wide Application Range
Senmine diamond core drill bits provide reliable, precise, and fast drilling for a wide range of applications—from plumbing and HVAC to cable routing and anchoring. They are the trusted choice for utility work, infrastructure, and construction projects, big or small.
Customization & OEM/ODM
All Core Drill Bits
- a length : 150-1000mm
- b aperture : ф12-500mm
- c thickness : 1.8-5.0mm
- a Aperture: ф12-500mm
- b Length: 19-23mm
- c Width: 3.7-4.5mm
- d Height: 9-12mm
Welding Technology
Senmine utilizes laser welding or high-frequency welding processes based on different working conditions and customer requirements.This achieves a high-strength bond between the drill bit and drill pipe, with strong and durable weld seams, ensuring stable performance in demanding construction environments
Drill Pipe
The drill pipe is designed with either a welded (laser or high-frequency welded) or seamless structure.Welded pipes offer sturdy construction suitable for most conventional applications, while seamless pipes are ideal for scenarios requiring higher strength and corrosion resistance. Customers can customize according to their specific needs.
Senmine · Drilling Through the World
Senmine specializes in manufacturing diamond drilling tools, serving global brand owners, wholesalers, and engineering contractors. We offer OEM / ODM customization for core drill bits, saw blades, and more, with flexible options for sizes, structures, welding techniques, and packaging to meet diverse market and application needs. With advanced production equipment, strict quality control, and efficient delivery capabilities, Senmine is committed to providing reliable, high-performance product solutions.
PROCESS EQUIPMENT
Premium Equipment
Utilizing high-precision CNC machinery for accurate cutting of tubes and segments, with strict
Quality inspection system
Rigorous quality inspection process covering raw material incoming inspection, in-process monitoring, finished
High production capacity
Equipped with multiple advanced automated production lines and ample capacity to efficiently handle large-volume orders, ensurin
Product Quality and Testing Report
Inspection Report
OEM INFO
New Product
Assist customers in developing new products, supporting customization based on drawings, samples, or concept designs to meet diverse needs.
Packaging
Various packaging options including anti-rust cartons, plastic cases, and custom wooden boxes, supporting laser engraving, silk-screen, and labeling for logo customization to enhance brand identity.
Order
Flexible minimum order quantities, accommodating small trial runs to large-scale production; special offers and custom plans available for distributors and brand owners.
Fast Samples
Fast prototyping service to shorten product validation cycles, typically completing samples within 3-7 days to accelerate customer projects.
Professional Team
Dedicated account managers provide professional liaison and full follow-up on customization and production progress, ensuring timely and smooth communication.
Factory Advantages
Complete Facilities
Self-owned factory equipped with complete processing, welding, grinding, and assembly workshops to ensure efficient and controllable production throughout.
Rich Export Experience
Over 20 years of extensive export experience, familiar with international market requirements and standards to guarantee product quality and compliance.
Reliable After-sales
Comprehensive after-sales service system, promptly responding to customer feedback and providing technical support and solutions.
Numerous Brand Partners
Long-term, stable partnerships with more than 50 well-known brands, demonstrating strength and reliability.
