China Hex. 22 Shank 108mm Forged Collar Tapered Drill Rods for Rock Drilling Manufacturer, Factories

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China Hex. 22 Shank 108mm Forged Collar Tapered Drill Rods for Rock Drilling Manufacturer, Factories

Product Details

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

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Product Description

📋 Basic Product Information

Model NO.

Forged collar tapered rod

Certification

ISO 9001:2000, ISO 9001:2008

Standard

Surface Treatment

Spray-Paint

Manufacturing 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

HS Code

82071990

📦 Packaging & Delivery

Transport Package

Wooden Case

Specification

Hex22mm Hex25mm

Package Size

30.00cm * 30.00cm * 30.00cm

Package Gross Weight

5.000kg

Production Capacity

500,000 PCS/Month

📝 Product Description

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

Key Configurations:

Steel Grade: 95CrMo equivalent to SANDBAR 20 or C253, Z708, Sanbar 23, 55SiMnMo.
Shank Size: Hex. 22mm x 108mm, 159mm, 80mm; Hex. 25mm x 108mm, 159mm.
Taper Angles: 4°46', 6°, 7°, 11°, 12°, etc.
Length Range: 0.4m - 10m.

The basic theory is that taper drill rods and taper drill bits must match in the same tapered degree for optimal performance. Light-duty rock drills usually utilize a 7° taper or smaller, while heavy-duty rock drills mainly use 11° or 12° taper angles.

📊 Technical Specifications (Hex 22mm)

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

ROD CROSS SECTION	Length (mm / ft-in)		Weight approx. (kg)
4°46' Taper Angle
22H	800	2'7½"	2.8
22H	1600	5'3"	5.3
22H	2400	7'10½"	7.7
22H	4000	13'1½"	12.7
7° Taper Angle
22H	400	1'3¾"	1.6
22H	1600	5'3"	5.2
22H	3050	10'	9.7
22H	8000	26'3"	24.9
11° Taper Angle
22H	800	2'7½"	2.8
22H	1830	6'	6.0
22H	4000	13'1½"	12.6
22H	8000	26'3"	24.9
12° Taper Angle
22H	610	2'	2.2
22H	2000	6'6¾"	6.5
22H	3655	11'11 5/8"	11.6
22H	8000	26'3"	24.9

Frequently Asked Questions

1. What applications are taper drill rods suitable for? Taper drill rods are ideal for rock drilling, blasting hole creation in quarries, coal mines, and various construction contractions like traffic infrastructure.

2. How do I choose the correct taper angle? The choice depends on the rock drill duty. Light-duty drills typically use a 7° taper, while heavy-duty rock drills require 11° or 12° taper angles. The rod and bit must match the same degree.

3. What are the common shank sizes available? The most common shank sizes are Hex 22mm (7/8") and Hex 25mm (1"), with standard lengths like 108mm (4 1/4") and 159mm (6 1/4").

4. What materials are used in manufacturing these rods? Rods are manufactured from high-quality carbon steel and alloys like 95CrMo, 55SiMnMo, and 23CrNi3Mo for durability and resistance.

5. How is the product protected during shipping? Rods are typically packed in sturdy wooden cases or bundles to ensure they are protected from damage and corrosion during transit.

6. What is the production capacity for bulk orders? The facility has a production capacity of approximately 500,000 pieces per month to support large-scale industrial requirements.