Rotary Drill Double Wall Or Single Wall Casing Pipe With Casting
Joint
Product Description
In order to realize the reverse circulation drilling process of the
through-hole DTH hammer, the supporting drilling tool system mainly
includes a double-wall drill pipe. In addition to the through-hole
DTH hammer used to achieve the impact effect, a reverse circulation
drill bit, a dual-channel faucet, and other auxiliary tools are
also required. The dual-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
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.
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.
About us
LangFang Baiwei Drill Co.,Ltd located in the center of Beijing,
Tianjin and Hebei-Yongqing Industrial Area. Langfang Hebei.
Our company is a drilling tools manufacturing enterprisewith
integration of design, geological, well, double wall, oil, auger
and other special drilling pipes. And trenchless special drilling
tools such as pilot guide bits,swivels, reamers, sub saver,
pneumatic pipe rammer, pipe bursting machine.
We have specially invited domestic wellknown expert Mr.zhou
shengfeng as our general manager who engaged in the HDD drilling
tools and processing technology as technical consultant. A solid
research team lays the foundation of product quality, new product
development and after-sales service.
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.
