• Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod
  • Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod
  • Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod
  • Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod
  • Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod
  • Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod

Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod

Standard: ISO
Length: 600-6000mm
Usage: Coal Mining, Well Drilling, Ore Mining
Material: Carbon Steel
Delivery: 20-30days
Color: on Request
Customization:

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Basic Info.

Model NO.
HEX22x108MM, HEX25x108MM
MOQ
50PCS
After-Sale Service
Yes
OEM/ODM
Yes
Transport Package
Plywood Box
Trademark
SANSUNG
Origin
China
HS Code
72288000
Production Capacity
100000 PCS/Year

Product Description

Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod

Tapered drill rod

Different rock formations and rock drills require different taper angles. When drilling with high impact hydraulic rock drills in medium-hard to hard and abrasive rock formations, a wide taper angle is normally used. Taper angles of 11 and 12-degrees are normally used on modern drill rigs. For low impact rock drills and softer rock formations, a narrow taper angle of 7 degrees is used. A 7 degree angle can also be used if bit spinning is a problem when using 11 and 12 degree equipment. In addition, a 4.46 degree angle is ideal for soft rock when you're using pneumatic or hydraulic drill rigs to prevent bits from spinning or becoming detached.

Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod
 

Tapered Drill Rod L
mm ft

 

Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod
shank: Hex.22mm (7/8")*108mm or Hex.25mm (1")*108mm

Taper degree: 7°, 11° and 12°

600 2
800 2
1200 4
1600 5
2400 8
3200 10
4000 13
Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod
Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod
Shank Hex 22X108mm 25X108mm 7degree 12degree Rock Stone Quarry Drilling Taper Steel Bar Rod
 

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