Product Description
In order to realize the reverse circulation drilling process of the
through-the-hole DTH hammer, the matching drilling tool system
mainly includes a double-wall drill rod. In addition to the
through-the-hole DTH hammer used to realize the impact effect, a
reverse circulation drill bit and a double channel are also
required Faucet, and other auxiliary tools. The double-arm drill
pipe is one of its core components
High strength double tube drilling pipe for air reverse circulation
drilling in open pit mining.
Length can be made as per 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 |
Forged connector
Connector material had been forged, that have Improved material
density, changed the fibrous Texture of the material, so that the
general mechanical Properties of the material have been more
improved Nitride, phosphide or copper plating processing Nitride,
phosphide or copper plate processing to the rod ends Have ensured
thread anti-corrosion, anti-bonding, and improved Joint surface
fatigue resistance.
Upsetting & thicking
Upsetting & thicking to the rods have improved The metallurgical
structure and enhanced the Impact toughness, that have ensured
comprehensive Mechanical properties and the friction weld seals Not
be broken.
Quality control
The complete systematic testing equipment guarantees BaiWei
first-class products quality with attitude of rigorous speciality
and the spirit of aggressive research and self probing.
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.
