Ingco 28mm x 450mm Professional Wet Diamond Core Bit – Laser-Welded M22 x 2.5 Industrial Core Drill for Rebar-Reinforced Concrete, Marble, and Masonry (DCB520288)

Core drilling clean, structural passages through heavily reinforced concrete or dense masonry using low-grade or non-laser-welded bits is a slow, highly dangerous process that often leads to shattered tooling. Standard segmented core bits frequently lose their teeth when striking hard steel rebar, binding the machine and endangering the operator. The Ingco DCB520288 28mm x 450mm Professional Wet Diamond Core Bit is an industrial-strength structural penetration solution engineered to slice through heavy steel rebar and high-density concrete with absolute precision. Featuring high-grade industrial synthetic diamond segments and a deep 450mm clearing shaft, this premium coring bit enables civil engineers, HVAC technicians, and commercial plumbers to cut flawless utility ports through dense structural aggregates without tool stalls.

The phenomenal cutting speed and exceptional safety of this core barrel rely on its laser-welded segment matrix. Unlike traditional brazed segments that can fail under high friction heat, the laser-welded bond creates a molecularly solid fuse with the high-tensile steel cylinder wall, drastically reducing the risk of segment detachment. Designed for high-performance wet-drilling cycles, the open-bore design channels continuous water cooling directly to the cutting zone, suppressing silica dust, dropping thermal stress, and instantly ejecting aggregate slurry. Outfitted with an M22 x 2.5 threaded adapter interface, it locks flush onto professional rig-mounted diamond drilling machines, maintaining perfectly true concentric balance to eliminate vibration and deliver perfectly smooth, non-destructive holes.

Key Features

• Industrial Laser-Welded Segments – Molecularly fused diamond segments provide massive heat resistance and ultimate mechanical safety when striking structural steel rebar.

• Rebar-Optimized Diamond Matrix – Impregnated with a high concentration of tough synthetic diamonds to cleanly chew through embedded iron bars and hard construction materials.

• Extended 450mm Working Depth – Long core tube offers the necessary reach for deep structural walls, foundational floor slabs, and thick columns.

• Continuous Wet-Cooling Geometry – Designed specifically for wet operation, using water to flush out pulverized concrete sludge and prolong segment sharp edges.

• Universal M22 x 2.5 Connection – Precision-machined internal thread interface mounts directly onto heavy industrial core drills without adapter slack.

• Rugged Carton Box Protection – Shipped securely inside a thick, heavy-duty carton box layout to preserve thread integrity and protect the sharp diamond segments during transit.

Technical Specifications

• Brand: INGCO

• Model: DCB520288

• Product Type: Professional Laser-Welded Wet Diamond Core Drill Bit

• Core Hole Diameter: 28 mm

• Total Barrel Length: 450 mm

• Mounting Thread Connection: M22 × 2.5 Female Adapter

• Segment Attachment Profile: Advanced High-Strength Laser Welding

• Operation Mode Profile: Wet Drilling System

• Core Barrel Composition: High-Tensile Structural Seamless Alloy Steel Tube

• Primary Machine Compatibility: Flawlessly pairs with heavy-duty rig-mounted coring machines, including the Ingco DDM13501 diamond drilling series and similar M22 spindle platforms

• Primary Target Substrates: Rebar-reinforced concrete beams, high-strength foundational slabs, natural granite blockages, dense marble panels, and thick clay brickworks

• Primary Applications: Electrical conduit line routing, plumbing drainpipe through-holes, HVAC ventilation pathway coring, anchor bolt pocket creation, and structural concrete sampling

Ideal For

Commercial plumbers, HVAC contractors, electrical infrastructure installers, and bridge or highway construction crews who require a durable, high-speed 28mm wet diamond core bit to drill clean utility portals through reinforced concrete.

Package Includes

1 × INGCO DCB520288 28mm × 450mm Wet Diamond Core Bit 1 × Heavy-Duty Industrial Protective Carton Box Layout Storage Container