Description:Tapered drill rod,another name called taper rod, tapered drill steels, This provides a hexagonal chuck section to provide leverage for the rotation chuck bushing. It usually has a forged collar to maintain 
the proper shank striking face position in the rock drill, and a tapered bit end. Tapered steel lengths— 
available from 0.6 mto 3.6 m in length—are measured from the collar to the bit end. 

Shank Hexagon: 19 x108 mm, 22x 108mm, 25 x108 mm,  25 mmX159 mm  6, 7, 11, 12 degree taper in most lengths, taper degree of drill steel is mostly imports for excellent drilling productivity. 

For drilling medium-hard to hard and abrasive rock formations,Taper angles of 11 and 12-degrees are 
normally used on modern drill rigs, likeour model no. PD-Y58 crawler hydraulic rock drill. Also for Y6, Y10, Y24, YT24, Mobile rock drill pneumatic and hydraulic. 

For low impact rock drills and softer rock formations, a narrow tape range of 7 degrees is used, such as 
Indian, Saudi’s granite and marble quarry. 

A comprehensive range of taper button bits, cross bits and chisel bits with 6, 7, 11, 12 degreetaper, drill 
hole diameter: 28mm-57mm. 

Product features

Carburization is a process used to harden the entirerod surface both internally and externally to strengthen and extend the life of the rod. Carburization is a process used to harden the entire rod surface both internally and externally to strengthen and extend the life of the rod.

Tapered Drill Rod Specifications

• Steel grade: 95CrMo Equivalent to SANDBAR 20 or C253, 55SiMnMo
• Size: hex.19mm, hex.22mm, hex 25mm
• Diameter: 0.4m-10m.
• Taper degree: 7°11°and 12°etc.
• Package:in wooden case or bundles
• Productivity: 10000MT/month

• Shank size	Length in mm	Diameter in mm	Part number
  19x108	200	17	0721 2017-20
  19x108	250	17	0721 2517-20
  19x108	300	17	0721 3017-20
  19x108	200	20	0721 2020-20
  19x108	250	20	0721 2520-20
  19x108	300	20	0721 3020-20
  19x108	200	23	0721 2023-20
  19x108	250	23	0721 2523-20
  19x108	360	23	0721 3023-20
  Shank size	Length in mm	Diameter in mm	Part number
  22x108	200	17	0711 2017-20
  22x108	250	17	0711 2517-20
  22x108	300	17	0711 3017-20
  22x108	200	20	0711 2020-20
  22x108	250	20	0711 2520-20
  22x108	300	20	0711 3020-20
  22x108	200	23	0711 2023-20
  22x108	250	23	0711 2523-20
  22x108	360	23	0711 3023-20
  Tapered Drill Steel
  Shank size	Length in mm	Length in feet	Part number
  22X108	610	2	0610-xx*
  22X108	1220	4	1220-xx*
  22X108	1830	6	1830-xx*
  22X108	1980	2006-1-2	1980-xx*
  22X108	2440	8	2440-xx*
  22X108	3050	10	3050-xx*
  22X108	3660	12	3660-xx*
  22X108	5485	18	5485-xx*
  22X108	6400	21	6400-xx*
  22X108	7315	24	7315-xx*
  Shank size	Length in mm	Length in feet	Part number
  25X108	1500	4,9	1500-7*
  25X108	1830	6	1830-7*
  25X108	2000	2006-1-2	2000-7*
  25X108	2200	7,2	2200-7*
  25X108	3050	10	3050-7*