Diamond core bits for construction and decoration work, covering concrete, reinforced concrete, brick, block, stone, tile and glass. Available in laser-welded, high-frequency welded, vacuum-brazed and electroplated bonds, with M22, 1-1/4"-7 UNC and SDS Plus/Max connections, in wet, dry and wet/dry versions. Diameters and threads can be customized to project requirements.
20 mm diamond core bit, laser welded, for wet drilling — for clean, stable coring in .
20mm-200mm Laser Welded Carbon Steel Wet Core Drill Bit Diamond Hole Saw for Reinforced Concrete. Size range 20 mm. The laser-welded bond gives high joint strength, impact resistance and long service life. Designed for wet drilling. Suitable for coring in , water and electricity installation and air-conditioning pipe holes. Supplied with M22 / 1-1/4"-7 UNC / SDS connection. OEM/ODM customization of diameter, thread, packaging and branding available.
Suitable for high-strength concrete and reinforced concrete cutting
Annual Production Capacity: 5,000,000 sets / year
Custom Manufacturing: OEM / ODM / Buyer Label
Delivery Terms: FOB · CFR · CIF · EXW
Payment Methods: T/T · L/C · D/P D/A · Western Union · PayPal · Credit Card
Languages Spoken: English · 中文
Response Time: ≤ 10 h · Response Rate: 94.44%
Description from the Supplier
The following content is provided by the manufacturer, covering product features, factory advantages and how to work with us.
Product Description
Drilling Tools & Accessories · 20mm-200mm Laser Welded Carbon Steel Wet Core Drill Bit Diamond Hole Saw for Reinforced Concrete
Matching drilling tools include diamond reaming shells, casing shoes, adaptors, DTH hammer bits and step drag bits. Reaming shells are run with core barrels to trim the borehole wall, maintain hole gauge and improve string stability.
DTH bits and drag bits deliver fast penetration in water-well, quarry and engineering drilling; sizes and connections are supplied to match your hammer model.
Product Advantages
More than 20 years of professional experience in diamond tools; the factory has been producing synthetic diamond tools since 2009.
Factory-direct supply: we are the manufacturer, with no middleman — better prices at the same quality.
High-grade raw materials: imported cobalt and nickel powders and high-quality diamond single crystals, with a formula validated by testing.
Advanced processes and strict inspection: hot-press sintering, vacuum brazing and laser welding, with piece-by-piece inspection and sampling of hardness, density and bond strength.
Efficiency and life: PDC anchor bits last 10–30 times longer than tungsten-carbide bits and raise efficiency by about 60%; impregnated bits drill fast with a long service life.
Full range and customization: AQ–PQ and T2/T6 series, common sizes 24–600 mm; matrix hardness, diamond concentration, threads, packing and buyer labels can all be customized (OEM/ODM).
Fast response and reliable lead time: enquiries answered within 10 hours, about 7 days delivery when the mould is ready and about 12 days when a new mould is required.
Packing & Delivery
Standard packing is an inner box in a thick export carton; neutral packing or your own packing method is available on request. Port of shipment: Guangzhou / Shenzhen. Trade terms: FOB, CFR, CIF, EXW. Payment: T/T, L/C, D/P, Western Union and PayPal.
Quality & Service
We are the manufacturer: 100% original products, reasonable prices and attentive service. At the same quality our price is the best; at the same price our quality is the best. If any quality problem occurs, contact us and we will take responsibility for it.
Different markets require different quality and sizes; we can produce bits, segments and accessories in any size and quality to your requirement.
Company Profile
Hunan Jincheng Tools Manufacturing Co., Ltd. was established in 2009 as an innovative manufacturer specialized in synthetic diamond tools. The factory is located in Anfu Industrial Park, Linli County, Changde, Hunan, covering 20,000 square metres, producing "Jincheng (JC)" brand diamond geological drill bits, PDC bits, tricone bits and diamond saw-blade segments.
Taking "improve the application value of diamond, promote the progress of the tool industry" as its mission, the company stays market-oriented, treats reputation as its life and quality as its foundation, continually develops new technologies and products, applies total quality control and serves customers with reliable products and a strong sense of responsibility. You are welcome to visit our factory and discuss cooperation.
Contact: Mr. Steven Tang (General Manager) · Tel +86 736-5805333 · Mobile/WhatsApp +86 159 7366 2165 · Email hnjctools@163.com · Address: Anfu Industrial Park, Linli County, Changde, Hunan, China
Product Description
Content below is based on actual product photos and factory specifications; images and parameters are subject to the final delivery.
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