How to choose DTH Drill Pipe?

The function of DTH drill pipe is to transmit impact energy and rotational force to the DTH hammer and drill bit, and at the same time act as an airflow channel.

JK Drilling Product Page

In principle, the lighter the drill pipe, the better. Therefore, when other parameters are the same, the thinner is more popular.

But at the same time, the tensile strength and yield strength of the drill pipe must also be considered, which means that the wall thickness of the drill pipe must reach a certain thickness to ensure sufficient strength.

When service conditions require the thinnest possible drill pipe to ensure the lightest total weight of the drill string, another method to manufacture the most suitable drill pipe is to use higher quality steel for production.

Each diameter of dth drill pipe has several different wall thickness designs and different steel materials for customers to choose from.

Therefore, in actual use, different specific needs may require different drill pipes.

For example, when drilling holes of ordinary depth, use thicker ordinary high-quality steel drill pipes, such as blasting holes; and when drilling deeper holes, use thinner and better material drill pipes, such as ground source heat pump drilling purposes.

In addition, dth drill pipes are well heat treated, accurately machined, and friction welded.

Specification Overview

TDS Drill Pipe

TDS-Drill Pipe

TDS-Drill Pipe

How to order?

Contact us to discuss your requirements of Crawler Mounted Pneumatic Tophammer Drill Rig. Our experienced sales team can help you identify the options that best suit your needs.

DTH Drill Pipes:

Length + Diameter +Connection Thread + Wall Thickness

Sub Adapters:

Type + Connection Thread +Length + Diameter

DTH drill rod,also known as DTH drill pipes a drilling tool to deliver impact energy and rotational force to the DTH hammers and DTH drill bit. And it has a wide applications such as rock drilling and crushing, anchor drilling, water well drilling, etc.

Introduce of the DTH drill rod

The Importance

DTH drill pipe is the basic component of the drill string. The raw material is stainless steel pipe (wall thickness is generally 9~11mm). And Its main function is to transmit torque and deliver drilling fluid. And it can keep the borehole continuous deepen by gradually lengthening the drill pipe. The project consumes a lot, so the quality of the drill pipe directly affects the progress of the project. Therefore, drill pipe plays an important role in coal mining, geological exploration, and engineering.

Raw materials and manufacturing processes

The raw material for pipe bodies are R780/N80 which is from well-known large-scale steel companies in China. And the material of the joint part is 35CrMo. An integrated oxidation free furnace is used for material heat treatment. Besides,and professional CNC machining is used for thread processing. All threads are equipped with thread gauges that comply with international standards.

The two ends of the pipe body are internally thickened and tempered after friction welding. The drill pipe joint shall be subject to quenching and tempering heat treatment after rough machining. Moreover, the surface nitriding treatment after precision machining effectively eliminates the probability of failure such as sticking, fracture, etc.. Which can make the drill pipe more wear-resistant, easy to disassemble and greatly extend its service life.

Because there are different types and models, it is necessary to choose the most suitable one to achieve the best effect. When choosing drill pipes, it is important to go to a reputable and large manufacturer for quality assurance. Bellow is the specifications of our DTH drill rod:

Rod dia(mm) Rod Length(mm) Thickness(mm) Connect Thread Wrench Flats(mm) inch mm 3 76 - 5 API23/8&#;REG 57/64.5 3 76 - 8 API23/8&#;REG 57/64.5 31/2 89 - 6 API23/8&#;REG 70/64 31/2 89 - 8 API23/8&#;REG 70/64 4 102 - 10 API23/7&#;REG 76/89 41/2 114 - 6 API31/2&#;REG 89/95 41/2 114 - 8 APl31/2&#;REG 89/95 41/2 114 - 10 API31/2&#;REG 89/95 41/2 114 - 18 API31/2&#;REG 89/95 5 127 - 12 APl31/2&#;REG 89 5 127 - 14 API31/2&#;REG 89 5 127 - 18 API31/2&#;REG 89 51/2 140 - 9 APl41/2&#;REG or 4&#;FH 114 51/2 140 - 10 AP141/2&#;REG or 4&#;FH 114 51/2 140 - 12 AP141/2&#;REG or4&#;FH 114

BESTONE is a well-known domestic DTH drill rod manufacturer. And we have rich experience in providing customers with high-quality water well drill pipes and comprehensive after-sales service. If you want to know the latest drill pipe prices or more detailed information, please feel free to contact us: https://www.bestonedrill.com/contact-us/