High-Quality Blast Hole Drilling Hex25mm 7/11/12 Tapered Drill Rod for Mining and Tunnelling Manufacturers, Factory

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High-Quality Blast Hole Drilling Hex25mm 7/11/12 Tapered Drill Rod for Mining and Tunnelling Manufacturers, Factory

Product Details

Customization:	Available
After-sales Service:	Repair or Replacement
Warranty:	6 Months

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Product Description

Basic Information

Model NO.

hex25

Certification

ISO 9001:2000, ISO 9001:2008

Standard

Surface Treatment

Spray-Paint

Process

Forging

Material

Carbon Steel

Degree

7 / 11 / 12

Machine Type

Drilling Tools

Color

Red, Black, Yellow, White

Material Quality

95crmo, 55simnmo, 40simncrnimo, 23crni3mo, D6a

Origin

China

Capacity

500,000 PCS/Month

Packaging & Delivery

Package Size

30.00cm * 30.00cm * 30.00cm

Gross Weight

5.000kg

Transport Package

Wooden Case or Bundles

Product Description

Taper drill rod is essentially used for rock drilling, blasting holes and other drilling works in quarries, coal mines, traffic and other construction projects. It works in conjunction with taper drill bits and is available in different lengths for various applications.

Our taper drill rods come in a variety of taper angles. Generally, light-duty rock drills use a 7° taper or smaller, while heavy-duty rock drills mainly utilize 11° or 12° taper angles. It is critical that taper drill rods and taper drill bits share the same tapered degree for optimal performance. We provide tapered rods in a full range of shank configurations and steel hex diameters for hand-held pneumatic drilling needs.

Steel Grade

95CrMo (equiv. to SANDBAR 20/C253), Z708, Sanbar 23, 55SiMnMo

Shank Size

Hex. 22mm x 108mm/159mm/80mm, Hex. 25mm x 108mm/159mm

Taper Degree

4°46', 6°, 7°, 11°, 12° etc.

Length Range

0.4m - 10m

Technical Note: Shank hex. 22 mm (7/8") x 108 mm (4 1/4"). Rod hex. 22 mm (7/8"). Flushing hole diameter 6.7 mm.

ROD CROSS SECTION	Length		Weight Approx. (kg)
SECTION	mm	foot/inch	kg
4°46' taper angle
22H	800	2'7½"	2.8
22H	1600	5'3"	5.3
22H	2000	6'6¾"	6.5
22H	3200	10'6"	10.2
7° taper angle
22H	400	1'3¾"	1.6
22H	800	2'7½"	2.8
22H	1600	5'3"	5.2
22H	3050	10'	9.7
22H	4000	13'1½"	12.6
11° taper angle
22H	800	2'7½"	2.8
22H	1525	5'	5
22H	2435	8'	7.8
22H	4800	15'9"	15.1
12° taper angle
22H	610	2'	2.2
22H	1220	4'	4.1
22H	2000	6'6¾"	6.5
22H	3655	11'11"	11.6
22H	8000	26'3"	24.9

Frequently Asked Questions

What are the primary applications for taper drill rods?

Taper drill rods are widely used for rock drilling, creating blasting holes, and other essential drilling tasks in quarries, coal mines, and various infrastructure construction projects.

How do I choose the correct taper angle for my rock drill?

Selection depends on the machine duty. Light-duty rock drills typically use a 7° taper or smaller, while heavy-duty machines generally require an 11° or 12° taper angle.

What steel grades are used in the manufacturing of these rods?

Our rods are manufactured using high-quality steel grades including 95CrMo (equivalent to SANDBAR 20/C253), Z708, Sanbar 23, and 55SiMnMo for maximum durability.

Do the drill bits and rods need to have matching taper angles?

Yes, it is a fundamental requirement that the taper drill rod and the taper drill bit have the exact same tapered degree to ensure a secure fit and efficient energy transfer.

What are the standard shank sizes available?

Common shank sizes include Hex. 22mm x 108mm, 22mm x 159mm, and Hex. 25mm x 108mm/159mm, catering to various handheld pneumatic drilling equipment.

How are the products protected during transport?

To ensure safe delivery and prevent damage, products are typically packaged in sturdy wooden cases or secured in bundles depending on the order size and requirements.