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Quick Details

  • Place of Origin: Shandong, China (Mainland)
  • Brand Name: Jinquan
  • Model Number: DHD340A, DHD350R, DHD360, DHD380
  • Type: Center Drill Bit
  • Material: High Carbon Steel
  • Use: Metal Drilling
  • Name: DTH Bit

Packaging & Delivery

Packaging Details Ply-wooden cases or as per clients' special requirements.
Delivery Time Shipped in 30 days after payment



 Product Description


A wide range of products, including DTH Bits, DTH Hammer, DTH Drill Tube, ODEX & RC Drill Tools, Down The Hole (DTH) Drilling Spare Parts, Diamond Grinding Cups/Pins for Button Bits Sharpening.


Down-the-hole rock tools (drilling tools) are rock drilling equipment which takes compressed air as power source to partially transfer impact power into drilling holes. An air distributing device in a top hammer controls a piston to move back and forth. An impact device arranged in the front of the top hammer transfers the impact powder to a down-the-hole bit to crush rocks.


• Our product range covers the most diverse applications in mining, natural resources exploration, water wells, quarries and civil works.


• Our products go from 3 to 25 inches drilling diameter.


• Jinquan corporation enhances its product line with a number of accessories and peripheral products, seeking to add value to the end user of Down the hole equipments.


DTH Bits

For DTH Bits, Various low pressure and high pressure DTH bits are available.


Low pressure DTH Bits diameter ranges from 66mm to 205mm, are used to equip with our Jinquan series low pressure hammers. Other low pressure DTH bits are available too upon customer's shank drawing or samples.


Diameter: From 76mm to 305mm.

Bit Shanks: DHD3.5, DHD340, DHD350, DHD360, DHD380, COP34,COP44,COP54,COP64,COP84, SD4, SD5, SD6, SD8, TD40,QL50,QL60,QL80, Mission 40, Mission 50, Mission60, Mission 80, BR1, BR2, BR3, Mach33, etc.

Face Design: Flat face, Convex face, Concave face, DGR.

Carbide Insert: Hemi-spherical(round), Parabolic(semi-ballistic), Ballistic(conical).



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 Company Information


 Liaocheng Jinquan Construction Machinery Co., Ltd. (Jinquan (Golden Spring) Rock Drilling Tools Co., Ltd.) was established in 1984, located in Economic Development Zone Of Liaocheng, Shandong Province, China. Our company belongs to the group company of Golden Spring Drilling Limited. We are one of the biggest production bases of all kinds of rock drilling tools, mainly produce "Jinquan" brand rock tools, including threaded button bits, tapered button bits, cross drill bits, chisel bits, down the hole DTH bits, DTH hammers, extension drill rod, MF rod, shank adaptors, coupling sleeves, conical shank cutter bits, pick holders, tricone bits, screw air compressor, piston compressor, water well drilling rig, DTH drill rig etc. Now our manufacturing capacity has reached eight series and more than 500 types of products. They are widely used in quarrying, mining, road building, railway, highway, water well, hydroelectric power and other basic energy & civil construction projects.

Jinquan Corporation is a specialized manufacturer & exporter of quality rock drilling tools in China, with advanced technology, top-class equipment, meeting select international quality standards. Furthermore, our products are produced & designed in terms of ISO9001:2008 stipulation. Owing to our products' excellent performance and reasonable pricing policy, we have successfully minimized our every customer's drilling cost into every meter. Also we would be happy to design & produce products as per your required specifications.



 Factory strength


production technology

 Work scene




The information you may like to know before order:

1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight.
And we recommend you pay us via Alibaba Credit Insurance, it's more fair for your party.For more details, visit this link please: tradeassurance.alibaba.com.

2. Handling time for an order
Based on order quantity, normally it takes 25-30 days for production.
Only 2 or 3 days if we have stock on your request size.

3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX/EMS or by air.
Bulk order: we suggest by airway or by sea shipment

4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out

5. After Services:
1. Our sales team will response for your question within 24 hours (Holidays Excluded).
2. Technical Support will be available in any time.
3. Free replacement will provide once the failure confirmed caused by our product quality.



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