7 11 12 Degree Tapered Horse Drilling Bits for Rock Drilling Tunnelling

• Certification：ISO9001:2015;SGS
• Standard：GB
• Surface Treatment：Spray-Paint
• Manufacturing Process：Forging
• Material：Alloy Steel
• Power Type：Pneumatic

=== Base Info ===

• Model NO.：40mm
• Condition：New
• Process：Heat Treatment
• Color：Golden, Blue, Red etc.
• Transport Package：Wooden Case or Plastic Box
• Specification：40MM
• Trademark：KAIYU
• Origin：Taizhou, Zhejiang
• HS Code：8207199000
• Production Capacity：1000000 PCS, Month

=== Description ===
Taper degree
a=4°, 7°, 11°
Inner hole diameter d=19mm, 22mm, 24mm
 286020.18306020.193263, 7020.2346520.253662 ,64, 8020.28,0.35386520.31406920.33426720.35437520.48447520.5468020.55
Production process :

Chisel bits and Cross bits Application:



Shipment and payment:
Ocean,by air, and by road; TT and L/C.

About us:1.Our factory has been specialized in manufacturing drilling tools and spare parts over 48 years.2.We have advanced technology and equipment.3.Rock drilling tools are exported throughout the world, main market :Europe,South America,Southeast Asia,Africa,Russia,India etc. Why you choose KAIYU tapered chisel bits?1. Tapered chisel bits connect with tapered drill rod perfectly for drilling holes;2. Mature welding technology ensures high quality of bits;3. Accurate dimension of taper degree perfectly matches the rods;4. Work reliable and very cost-effective;5. High grade tungsten carbide inserts;6. Bit bodies manufactured from high grade steel and processed using state-of-the-art CNC machinery and heat treatment.