Customized Double Wall RC Drilling Rod Trenchless Double Wall Drill
Pipe
Product Description
Trenchless double wall drill pipe is composed of inner drill pipe
and outer drill pipe (called inner pipe and outer pipe).
The inner cavity hole of the inner drill pipe is a pumping water or
mud channel to the construction hole during operation.
During engineering operation, the outer drill pipe is connected
with each other by thread, and the inner drill pipe is connected by
male and female joints of internal and external hexagonal
structure.
When the internal and external drill pipe is driven by power output
in a time-sharing way, it adopts the shift mode to independently
rotate and transmit torque.
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 |
Features of Drill Rod
1. Made of high quality alloy steel.
2. All our drill rods are heat-treated.
3. Reasonable structure, reliable performance and high using
efficiency.
4. Good concentricity, high precision and long service life.
Used in
Our drill rods are suitable to drill deep holes. They are widely
used in geological and mineral, metallurgy, mining, oil drilling
industries and so on. From drillers' feedback, our rods have
drilled up to 2000 meters depth. BaiWei has many years experience
in manufacturing coring drill rod, we try to provide you the most
cost-efficient products.
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.
Our Services:
1. Drill pipe strictly according to API ISO9001 standard.
2. If you found to quality problems within one month of the package
returned.
3. All strictly according to the contract and fulfill the
obligations and responsibilities.
4. 24 hours online customer service,feel free contact us.
