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China, Chinese 72mm Laser Welded Dry Concrete Drill Bit for Electric Drill1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Diamond Drilling ToolsCore Drill BitDiamond Core Bit
Hebei Diacutex Diamond Tools Technology Co., Ltd.
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Product DescriptionProduct DescriptionPremium Quality Laser Welded Dry Core Drill BitOur Dry Diamond Core Drill Bits are specially designed for drilling holes in concrete, brick, block, and masonry without water cooling. Manufactured using premium-grade industrial diamonds and laser-welded segments, these dry core drill bits deliver fast cutting speed, long service life, and superior safety in demanding drilling applications.The segment design ensures smooth penetration, reduced friction, and stable drilling even on reinforced substrates. The barrels are made of high-strength steel to withstand high RPMs, while the segment bonds are optimized for dry cutting, preventing overheating and premature wear.Available in multiple diameters, our concrete dry core bits are compatible with angle grinders, hand-held core drills, and rotary hammers using appropriate adapters. They are ideal for HVAC installations, plumbing, electrical conduits, air-conditioning lines, and renovation works where water usage is restricted.Every bit undergoes strict quality inspections, including segment hardness testing, welding strength checks, barrel integrity inspection, and balance testing. This ensures that each dry core drilling tool provides consistent performance, long lifetime, and precise hole cutting.Detailed PhotoSpecificationDiameterTotal LengthSegment SizeSegment NumberConnection?68mm92mm24mm*10mm*3.8mm4M16?72mm92mm24mm*10mm*3.8mm4M16?82mm92mm24mm*10mm*3.8mm5M16Quality Control And InspectionInspect the welding strengthWelding strength is critical for the safety and durability of a laser welded core drill bit. Using advanced laser welding technology, we bond each diamond segment firmly to the steel barrel. After welding, every diamond core drill bit is inspected with stress and pull tests to ensure segments cannot detach during heavy-duty drilling. This prevents accidents, downtime, and tool failure. By guaranteeing welding strength, our concrete core bits perform safely and consistently under both wet and dry drilling conditions. Contractors can rely on our core drilling tools for secure segment bonding and stable performance in demanding applications.Inspect the hardness of the segmentsThe diamond segment is the key cutting part of every laser welded diamond core drill bit. To guarantee efficiency and durability, we carefully test each segment's hardness before production. Segments that are too soft wear quickly, while those that are too hard can slow cutting speed. Our inspection ensures the diamond core drill bit delivers the right balance between cutting aggressiveness and long service life. This means faster drilling, consistent performance, and lower replacement costs for contractors. With strict hardness testing, our concrete core bits are reliable tools for a wide range of materials, from reinforced concrete to masonry.Inspect the core drill barrelsThe drill barrel provides strength and stability to a diamond core drill bit. Each barrel is inspected for thickness, roundness, and material quality before use. A poor-quality barrel may deform, wobble, or overheat during drilling, reducing tool life and accuracy. Our inspection process ensures the barrels meet high standards for dimensional accuracy and durability. With strong and precise barrels, our laser welded diamond core bits maintain smooth drilling, stable alignment, and long service life. Contractors using our concrete core bits can work confidently, knowing each tool is built with a reliable and carefully inspected barrel.Do the dynamic balancing test on drill barrelsProper balance is essential for safe and efficient drilling. Each diamond core drill bit is tested on high-speed machines to check its balance. Unbalanced tools cause vibration, reduce accuracy, and increase wear on both the drill and machine. By inspecting and correcting balance, we ensure smooth and stable drilling with less operator fatigue. Balanced laser welded core drill bits cut more efficiently, generate less heat, and deliver cleaner holes in reinforced concrete, masonry, and stone. This inspection guarantees that every concrete core bit provides professional contractors with reliable, vibration-free performance.Packaging & ShippingFAQFrequently Asked QuestionsQ: Can dry core bits drill reinforced concrete?A: Yes, with laser-welded segments, they cut both masonry and reinforced concrete.Q: Which machines are they compatible with?A: Hand-held core drills, angle grinders, and rotary hammers (with adapters).Q: Do you provide samples?A: Yes, samples available for testing before bulk order.Q: What is the delivery time?A: 7–15 days for standard sizes, longer for custom orders.Q: Do you offer OEM/ODM?A: Yes, with custom diameters, packaging, and logo branding.
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