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.
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