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
| Type | O.D.of the outer tube (mm) | I.D.of the inner tube (mm) | Outer dianeter of joint (mm) | Type of threads | Effective length (m) |
| WB114/65 | 114 | 65 | 156 | 41F | 6 |
| WB127/76 | 127 | 76 | 162/168 | 41/21F | 6 , 9.5 |
| DB127/76 | 127 | 76 | 184 | 51/2FH | 9.5 |
| WB140/88 | 139.7 | 88 | 184 | 51/2FH | 6,9.5 |
| WB219/130 | 219 | 130 | 240 | Factory standard | 6,9.5 |
| WK76/32 | 76 | 32 | 78 | 3" Remet | 3 |
| WK102/41 | 102 | 41 | 103 | 4" Remet | 3 , 6 |
| WK114/52 | 114.3 | 52 | 116 | 4 1/2" Remet | 3 , 6 |
| WK114/38 | 114.3 | 38 | 114.3 | 4 1/2" Metzke | 3 , 6 |
| WK114/50 | 114.3 | 50 | 114.3 | 4 1/2" Remet | 3 , 6 |
| WP50/20 | 50 | 20 | 50 | | 1 , 1.5 |
| WP73/35 | 73 | 35 | 73 | | 1 , 1.5 |
| WP89/40 | 89 | 40 | 89 | | 1 , 1.5
|
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.
