API Casting Joint 41/21F Threads Double Wall Drill Pipe 9.5m Length
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.
Get in Touch
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