Tapered Drill Rods Manufacturer | Rock Drilling Rods

Tapered Drill Rod Range

The product range is organized by rod body size, taper angle and surface-treatment category. Use the table as an initial filter, then confirm the complete drilling system before ordering.

Rod series	Product type	Taper	Length range listed on this page	Typical selection basis
Hex 22 mm	Standard tapered rod	7°	600–6,000 mm	Rock drill shank, bit connection and required hole depth
Hex 25 mm	Standard tapered rod	7°	4,000–6,000 mm	Larger rod body and longer listed lengths
Hex 22 mm	Carburized tapered rod	11°	610–8,000 mm	Matching 11° bit and operating requirements
Hex 22 mm	Carburized tapered rod	12°	610–8,000 mm	Matching 12° bit and operating requirements
Hex 25 mm	Carburized tapered rod	12°	1,830–6,095 mm	Matching Hex 25 mm shank and 12° bit

Selection note: A 7°, 11° or 12° connection is not interchangeable by name alone. Confirm that the rod taper matches the bit socket and that the shank end matches the rock drill before placing an order.

Hex 22 mm 7° Tapered Drill Rod

The Hex 22 mm 7° series covers the broadest listed length range on this page. It is available in lengths from 600 mm to 6,000 mm. Select it only after confirming the rock drill shank and the 7° tapered bit connection.

Listed lengths: 600, 800, 1,000, 1,200, 1,500, 1,600, 1,800, 2,000, 2,200, 2,300, 2,400, 2,500, 2,600, 3,000, 3,500, 4,000, 4,500, 5,000, 5,500 and 6,000 mm.

Hex 25 mm 7° Tapered Drill Rod

The Hex 25 mm 7° series is listed in longer sizes from 4,000 mm to 6,000 mm. Confirm the shank size, working space and required drilling depth before selecting this series.

Listed lengths: 4,000, 4,700, 5,000, 5,500 and 6,000 mm.

Hex 22 mm 11° Carburized Tapered Drill Rod

This carburized Hex 22 mm series uses an 11° taper and is listed from 610 mm to 8,000 mm. It must be paired with an 11° tapered drill bit.

Listed lengths: 610, 1,220, 1,830, 2,000, 2,435, 2,600, 3,200, 3,655, 4,000, 4,800, 5,600, 6,400, 7,200 and 8,000 mm.

Hex 22 mm 12° Carburized Tapered Drill Rod

This Hex 22 mm series uses a 12° taper and follows the same listed metric length range as the 11° Hex 22 mm carburized group. The correct choice depends on the matching bit socket rather than length alone.

Listed lengths: 610, 1,220, 1,830, 2,000, 2,435, 2,600, 3,200, 3,655, 4,000, 4,800, 5,600, 6,400, 7,200 and 8,000 mm.

Hex 25 mm 12° Carburized Tapered Drill Rod

The Hex 25 mm carburized series uses a 12° taper. The current product data lists an overall metric range from 1,830 mm to 6,095 mm. Individual metric and imperial length pairs must be technically verified before the detailed table is published.

Technical Specifications

Drill rod	Length		Taper	Weight Approx
Drill rod	mm	Foot	Taper	kg
Hex. 22mm Tapered Rod	600	2’	7°	1.93
	800	2’6”	7°	2.54
	1000	3’3”	7°	3.15
	1200	3’9”	7°	3.76
	1500	4’11”	7°	4.68
	1600	5’3”	7°	4.98
	1800	5’9”	7°	5.59
	2000	6’7”	7°	6.2
	2200	7’2”	7°	6.81
	2300	7’6”	7°	7.12
	2400	7’9”	7°	7.42
	2500	8’2”	7°	7.73
	2600	8’8”	7°	8.03
	3000	9’10”	7°	9.25
	3500	11’5”	7°	10.78
	4000	13’1”	7°	12.3
	4500	14’8”	7°	13.83
	5000	16’4”	7°	15.35
	5500	18’1”	7°	16.88
	6000	19’7”	7°	18.3
Hex. 25mm Tapered Rod	4000	13’1”	7°	16.1
	4700	15’4”	7°	18.9
	5000	16’4”	7°	22.1
	5500	18’1”	7°	22.1
	6000	19’7”	7°	24.1
Hex. 22mm Tapered Rod, Carburized	610	2’	11°	2.2
	1220	4’	11°	4.1
	1830	6’	11°	5.9
	2000	6’7”	11°	6.4
	2435	8’	11°	7.8
	2600	8’8”	11°	8.3
	3200	10’6”	11°	10.1
	3655	12’	11°	11.5
	4000	13’1”	11°	12.6
	4800	15’9”	11°	14.9
	5600	18’4”	11°	17.4
	6400	21’	11°	19.8
	7200	23’6”	11°	22.2
	8000	26’2”	11°	24.6
Hex. 22mm Tapered Rod, Carburized	610	2’	12°	2.2
	1220	4’	12°	4.1
	1830	6’	12°	5.9
	2000	6’7”	12°	6.4
	2435	8’	12°	7.8
	2600	8’8”	12°	8.3
	3200	10’6”	12°	10.1
	3655	12’	12°	11.5
	4000	13’1”	12°	12.6
	4800	15’9”	12°	14.9
	5600	18’4”	12°	17.4
	6400	21’	12°	19.8
	7200	23’6”	12°	22.2
	8000	26’2”	12°	24.6
Hex. 25mm Tapered Rod, Carburized	1830	6’	12°	7.96
	2435	8’	12°	10.38
	3050	10’	12°	12.84
	2655	12’	12°	15.26
	2965	13’	12°	16.5
	4270	14’	12°	17.72
	4880	16’	12°	20.16
	5530	18’	12°	22.76
	6095	20’	12°	25.02

Applications of Tapered Drill Rods

Mining & Tunneling

Tapered drill rods are used for blast-hole drilling and other rock-drilling operations in mines and tunnels. The selected rod must match the rock drill, tapered bit and required drilling direction.

Quarrying Industry

In quarrying, tapered drilling rods can be used for drilling in stone, granite and marble operations. Rod body size, connection angle and length should be selected according to the equipment and drilling plan.

Foundation & Anchoring

Construction teams use tapered drill rods for foundation drilling, anchoring and related rock-drilling work. Shorter or intermediate lengths may be useful where access and working space are limited.

Geotechnical Drilling

Tapered rods can support geological exploration and site-investigation drilling. For sampling or data-collection work, confirm the required hole geometry and the complete tool combination before ordering.

Competitive Advantage of Tapered Drill Rods

Tapered drill rods have significant competitive advantages in mining, tunneling, quarrying and other fields.

Their high hardness, high toughness and high wear resistance enable them to perform well in hard rock formations, ensuring the stability and efficiency of the drilling process.

In addition, the design of tapered drill rods optimizes energy transfer, increases drilling speed, reduces equipment wear and extends service life.

In the production process, advanced heat treatment processes and strict quality control are used to ensure the high quality and reliability of the products.

These advantages make tapered drill rods highly competitive in the market and meet the needs of various drilling operations for high-performance tools.

How to Select a Tapered Drill Rod

1. Match the Rod Shank to the Rock Drill

Start with the rock drill model and shank requirement. A Hex 22 mm rod and a Hex 25 mm rod are not interchangeable. Confirm the shank size before comparing taper angles or lengths.

2. Match the Taper Angle to the Drill Bit

The rod and bit must use the same taper connection. This page lists 7°, 11° and 12° rods. Do not select a rod only because its length fits the hole depth; first verify that its taper matches the bit socket.

3. Select a Practical Rod Length

Longer rods can reach greater hole depths, but the correct length also depends on the available working space, drilling direction, rock drill capacity and handling requirements. For restricted sites, a shorter starting rod may be more practical than using the longest available size.

4. Confirm Standard or Carburized Series

The current range includes both standard and carburized product groups. State your rock condition, drilling frequency and expected service conditions when requesting a recommendation. Do not assume that every treatment option is available in every hex size, angle and length.

5. Check the Complete Drilling System

A reliable configuration requires the rod, bit and rock drill to work as one system. Include the following information with your inquiry:

Rock drill brand and model
Rod shank size: Hex 22 mm or Hex 25 mm
Required taper: 7°, 11° or 12°
Required rod length
Bit diameter and bit type
Rock type or hardness description
Hole diameter, depth and drilling direction
Required quantity and destination country

Tapered Drill Rods