Diamond Core Drill Bit Manufacturer | OEM Wet & Dry Core Bit

Trusted Drilling Tool Supplier Worldwide

SENMINE — China Top Custom Diamond Core Drill Bit Manufacturer

Senmine is a leading global supplier of diamond drilling tools, specializing in custom core bits for drilling concrete, brick, stone, and other materials. We offer full OEM/ODM services, including customization of diameter, length, segment design, interface, and color, to meet diverse market needs.

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.

Product Structure

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All Core Drill Bits

a length : 150-1000mm
b aperture : ф12-500mm
c thickness : 1.8-5.0mm

Customization available for both seamless and welded tube bodies

Roof

Flat

Multipoint

Honey Comb

Turbo-Great wall

Turbo

Turbo-Roof

Gridding

Step

Great-Wall

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.

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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.

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 dimensional tolerance control to ensure uniform cuts, effectively enhancing product balance and durability while minimizing performance fluctuations.
Quality inspection system

Rigorous quality inspection process covering raw material incoming inspection, in-process monitoring, finished product dimensional accuracy checks, weld strength testing, and wear resistance verification, ensuring every product meets high standards for customer safety and reliability.
High production capacity

Equipped with multiple advanced automated production lines and ample capacity to efficiently handle large-volume orders, ensuring stable production cycles and timely delivery.

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.

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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.