Trenchless Double Wall HDD Machine Drilling Rod Drill Pipe

Product Description

1. Name: Double wall drill pipe

2. Size: DP89/40-DP219/150

3. Standard: ISO API

4. Certification: ISO API

High-strength double-tube drill pipe for reverse air circulation drilling in open-pit mining.
The length can be set according to customer requirements, such as 1m, 1.5m, 2.0m, 3.0m, 4.5m, 6m, etc.
Diameter: 102mm, 108mm, 114mm, etc.

Double wall drill pipe

Optimal design

Drill rods through the dispersion of equal strength And stress optimal design, can give full play to the Potential of drill material.

Forged connector

The connector material is forged, has an improved material density, and changes the fiber texture of the material, thereby greatly improving the general mechanical properties of the material. The end ensures that the thread is anti-corrosion, anti-sticking, and improves the fatigue resistance of the joint surface.

Application

It has applied successfully in gas exploration, drilling, geothermal well drilling and mine rescue hole and a ventilation hole construction, etc.

Drill pipe quality control:

1. Before order to be confirmed, the raw material of pipe and tool joint body should be booked from famous big steel enterprises in China.

2. Checked by our QC staff and factory own laboratory.

3. Every drill pipe has nondestructive inspection , cleaned and breach oil before packing.

4. Before delivery clients could send one QC or point the third party to check the quality such SGS, BV or others.

FAQ

Q: Are you trading company or manufacturer ?
A: We are factory.

Q: How long is your delivery time?
A: Generally it is 7-30 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample need to pay the cost of products and freight.

Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.