Gold Member Since 2008
Audited Supplier
Zhuzhou ZZ Import and Export Co., Ltd.

Tri-Cone Bits, Rock Drilling Tri-Cone Bits, Carbide Drilling Bits manufacturer / supplier in China, offering Drill Bits for Rock, Carbide Burs with High Quality, Tungsten Carbide Indexable Turning Inserts Tnmg160408 and so on.

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Drill Bits for Rock

FOB Price: US $10-2,000 / Piece
Min. Order: 10 Pieces
Min. Order FOB Price
10 Pieces US $10-2,000/ Piece
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Production Capacity: 30000 Per Month
Transport Package: CTN
Payment Terms: L/C, T/T, D/P, Western Union

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Basic Info
  • Model NO.: many types
  • Certification: ISO
  • Type: Drilling Bits
  • Usage: Mining,Rock,etc. Drilling, Coal, Ore, Water Well, Mining
  • Quality: Good Performance and Stable Quality
  • Specification: many
  • HS Code: 82071990
  • Customized: Customized
  • Length: Taper-length
  • Material: Carbide and Steel
  • Feature: Wear Resistant
  • Trademark: ZZ HARDMETAL
  • Origin: China
Product Description
PDC 2 and 3wings anchor bolt bit

Type: Standard and Improved
Application: Mainly used for working in soft rock. In the same working condition, its service life is 10~30 times of tungsten carbide drill bits, and the work efficiency is 50% higher. No diameter reducing, no need to grinding, effectively reducing the labour intensity and saving time.


Three wings

Type: Standard, Reinforced
Item No.: FWZT3
Applications: Suitable for drilling in Medium hard - Hard rock. Use oil drill arc-shaped design, drill body is steel material, good toughness, fast footage, more suitable in lithology. Oversized outlet, suitable for large drilling pressure, high volume pump, big deep hole drilling. Compared to the same type of oil drill, has a higher high performance ratio.


ZZ HARDMETAL -DRILL BRANCH is a member of Chinese Drill Steel & Drill Tools Association.We are doing continuous technical communication with the laboratories focusing on mining, drilling and tunneling of Chinese famous universities, such as the Drilling Research Laboratory of China University of Geosciences and the Institute of Forming Technology & equipment of Shanghai Jiao Tong University. In the meantime, we closely cooperate with the professional research institutions, Changsha Institute of Mining Research and China Coal Technology & engineering group Shanghai Research Institute. 
We integrated the top manufactures of Chinese Drill Steel & Drill Tools Association and keep good business relationship with international famous enterprises.
After analyzing the domestic and international advanced drilling theory, we develop new manufacturing technique, aiming to purchase suitable raw material, produce good tungsten carbide in right grade, develop impeccable manufacturing process, and adopt appropriate heat treatment to produce advanced, stable, reliable and outstanding products.
We own the specialized export company - Zhuzhou ZZ Import and Export Co., Ltd. Our products are exported to USA, Europe, etc. and got trust from our customers. Along with our company growth, we hope to build business with more company abroad.
Competitive products and Manufacturing process:
Cutting tooth and Engineering tool: Super-coarse-grain-size tungsten carbide, suitable welding technique and perfect heat treatment after welding.
Tapered chisel bits and cross Bit: reasonable selection of steel and tungsten carbide which perfectly bonded by high-frequency welding.
Tapered button bits: Cold forging process and excellent heat treatment exactly combined with the cold inlaying technique.
Thread button bits: Correct selection of material and hot mounting process. 
DTH bits: Perfect combination of material selection, heat treatment, and cold inlaying process.
DTH Hammer: Perfect combination of accurate gas distribution, impeccable processing process, selection of material and heat treatment.
Roller bits: Modern high-tech products; the design includes CAM three-dimensional simulation, material simulation and structure simulation. The quality is guaranteed by the strict demanding of working condition simulation, aerodynamic force, fluid design and the advantage manufacturing process of material nondestructive inspection, 5000 ton hydraulic forging, ultrasonic flaw detection, center flexible machining, partial surface hardening treatment, surface hardening treatment of bearing, partial cryogenic processing treatment, heat treatment and high-end manufacturing equipment. So, roller bit is a product requires high tech, advantage manufacture process and high-end manufacturing equipment.

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Ms. Christine Tang
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