3 1/2'' Reverse Circulation Drill RC Drill Pipe/Drill Pipe
Product Description:
The double-wall drill pipe is conducive to drilling through complex
formations. The circulation of compressed air in the double-wall
drill pipe is like a closed-circuit circulation system. Even if it
encounters an old hole or a karst cave, once the drill tool reaches
the bottom of the hole, the normal circulation will resume
immediately. , which cannot be achieved in conventional drilling
methods.
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 |
Drill pipe usage notes:
1. Before connecting the new drill pipe, apply thread oil on the
threads
2. Trim and break at least 3 times before drilling
3. Hard bending and plastic coating can be processed according to
the special requirements of customers.
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.
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.
