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Customized Drifting and Tunneling Drilling Tools

King-Long Brand Drifting and Tunneling Drilling Tools are made of high-quality hollow hexagonal steel. The product is subjected to high pressure forging and vacuum heat treatment and processed by CNC automatic equipment to ensure product quality.

Brief Introduction

King-Long Brand Drifting and Tunneling Drilling Tools are made of high-quality hollow hexagonal steel. The product is subjected to high pressure forging and vacuum heat treatment and processed by CNC automatic equipment to ensure product quality. King-Long Taper Drill Rod has three different grades for different requirement. It has different length and various applications. It is strong and wearable, easy to assemble and disassemble. It is mainly used on various rock drills, and is used with a one-bit drill bit and a cross drill bit. This product is widely used in mine drilling, rock drilling, coal mine rock roadway, tunnel excavation and other engineering construction.


Some Features 

A. Hollow Drill Steels/Shank Rods Shank Size: 108mm 159mm.

B. Hex of Taper Rods: H19 H22 H25.

C. Guide Tube Rods Connection: Male-Female, Female-Female.

D. Hollow Drill Steel Drilling Length: 400mm-10000mm.

E. Hollow Drill Steel Grades: 35, 55, 40(40SiMnCrNiMo), 95 etc.

F. Integral Drill Steels Head Dia: 24mm-44mm.

G. Shank Rod End Connections: R22, R23-Hex22-R23, Hex25-R23. R25- Hex25-R25.

H. Extension Rod Threads: R22, R25, R32 R38 T38 T45 T51.

I. Length of normal Extension Rods: 600mm-6400mm.

J. Steel Grades of Extension Rods: 23CrNi3MnV or 23CrNi3Mn.


Some Photos of King-Long. Drifting and Tunneling Drilling Tools Taper Drill Rods in workshop for production and stocked in warehouse.

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