7 and 11 Degree Drill Stem for Rock Drill

• Customization: Available
• Length: 1.0-6.0m
• Usage: Ore Mining
• Model NO.: 6/7/11/12 degree
• Material: High Manganese Steel
• Shank: Hex 22*108
• Size: Various Lenght Available
• Steel Type: G1, G2, G3
• Drilling Rod Length: 0.4-5.6 Meter
• Export Market: Global
• Materia: 55simnmo, 95crmo Steel
• Key Word: Tapered Drill Rods
• Aplication: for Top Hammer Driller, Stone Quarry, Civil Works
• Bits Diameter: 29-40mm
• Shape: Hexagonal
• Transport Package: Plywood
• Specification: CE
• Trademark: Bestlink
• Origin: China
• HS Code: 72288000
• Production Capacity: 10000PCS Per Month

Product Description

1. Tapered drill rod
Shank Hex: 19mm*83/108mm, 22m*83/108mm, 25mm*108/159mm
Taper degree: 4.46 6 7 11 12
Drilling rod length: 0.4m-6m

The tapered drill rod is used for rock drilling, blasting holes and other drilling works in the quarries, coal mines, traffic and other constructions.
Generally, the lightduty rock drill uses 7 taper or smaller taper angle, the heavyduty rock drill mainly uses 12 taper angle.


Tapered steel rod work with taper drill bits which are usually hexagonal. When it comes to the small-hole drillingtools equipped with pneumatic & hydraulic rock drills, Taper drill equipments is prevailingly used for rock drilling, blasting holes and other drillingworks especially in the mining application and dimensional stone industry.

Taper steel rod are the same as integral drill rods which havedifferent length to fit different drilling applications in mining, quarrying, road building etc. Taper drill rods need tapered drill bits to work, such as tapered chisel bits, tapered cross bits and tapered button bits.

There are different taper angle ( 6 degree, 7 degree, 11 degree, 12 degree, etc. )on customers' request. Taper drill rods and taper drill bits must be in the same tapered degree.

2. Integral drill rod
Shank: HEX*22*108
Bits diameter: 29-40mm

The products are widely used in coaling, construction, stoning and etc.

22mm 7 / 8 " hex rod. 108mm 4 1 / 4 " shank.
4°46' taper
Length (mm)	Part No.	Weight (kg)
800	578-0108,11	2.9
1600	578-0116,11	5.4
2000	578-0120,11	6.6
2200	578-0122,11	7.1
2400	578-0124,11	7.8
3200	578-0132,11	10.2
3500	578-0135,11	11.1
4000	578-0140,11	12.7
7° taper
Length (mm)	Part No.	Weight (kg)
400	573-0104,11	1.7
800	573-0108,11	2.9
1830	573-0118,11	6
2000	573-0120,11	6.5
2435	573-0124,11	7.8
3050	573-0131,11	9.9
3200	573-0132,11	10.1
4000	573-0140,11	12.7
11° taper
Length (mm)	Part No.	Weight (kg)
610	579-0106,11	2.4
1220	579-0112,11	4.2
1525	579-0115,11	5
1830	579-0118,11	6.1
2000	579-0120,11	6.6
2435	579-0124,11	7.9
2600	579-0126,11	8.4
3200	579-0132,11	10.3
3655	579-0137,11	11.7
4000	579-0140,11	12.8
4800	579-0148,11	15.1
5600	579-0156,11	17.5
6400	579-0164,11	20
7200	579-0172,11	22.4
8000	579-0180,11	24.9
12° taper
Length (mm)	Part No.	Weight (kg)
1220	577-0106,11	2.3
1525	577-0112,11	4.2
1830	577-0115,11	5.1
2000	577-0118,11	6.1
2435	577-0120,11	6.6
3050	577-0124,11	7.9
3200	577-0131,11	9.8
3655	577-0132,11	10.2
3965	577-0137,11	11.7
4800	577-0140,11	12.8
5600	577-0148,11	15.2
6400	577-0156,11	18.4
7200	577-0164,11	20
8000	577-0172,11	22
	577-0180,11	24.8