73mm Outer Dianeter Of Joint Steel Reverse Circulation Double Wall
Drill Pipes
Product Description
1. Name: Double wall drill pipe
2. Size: DP89/40-DP219/150
3. Standard: ISO API
4. Certification: ISO API
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. Double-arm drill pipe is one of its core components.
| Product Name | Double wall drill pipe |
| Material | steel |
| Color | black |
| Standard | API, ISO |
| Grade | SUS201, SUS304, SUS316, A2-70, A2-80, A4-80, 4.8 6.8 8.8 10.9 12.9 |
| Thread | mail joint |
| Used | water well drilling, gas well drilling, geotherm well 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
|
Two force regions
The thread of the non-digging drill pipe produced by the company
has two Force areas. This structure is designed to reduce the
resistance faced by drill A during the construction process. These
pipes are designed to withstand high torque while retaining a large
inner diameter for excellent drilling fluid flow, so that the
threads will not deform.
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.
Drill pipe quality control:
1. Before confirming, you should order raw materials for pipes and
tool joints from a famous large steel company in China.
2. Check by our quality control personnel and the factory's own
laboratory.
3. Each drill pipe should be non-destructively inspected before
packaging, clean and remove oil stains.
4. Before delivery, the customer can send a quality control letter
or instruct a third party to check the quality of SGS, BV or other
products.
FAQ
Q: Are you a manufacturer or trading company?
A: We are a specialized manufacturer.
Q: What are your main products, and used for?
A: Our products include core barrel, casing, drill rod, drill rig
and other drilling parts.They are used for mineral exploration,
geological drilling,
Q: How about discount?
A: Price is based on products and order quantity.
Q: Do you accept sample order?
A: Yes sure, please contact us for details.
