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[China]
Trade Verify
Address: Yongqing Industrial Zone, Langfang, Hebei, China
Contact name:Lily Gao
Langfang Baiwei Drill Co., Ltd. |
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Verified Suppliers
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Double-wall DTH drill pipe 102/41mm pipe diameter 4" Remet water well drilling
Product Description:
Double-arm drill pipe is also called double-layer drill pipe. It consists of inner and outer drill pipes (called inner pipe and outer pipe). The inner and outer pipes form an annulus, which is a channel for pumping the flushing medium to the bottom of the hole during hydraulic rock drilling and center sampling drilling. The central hole of the inner tube is used to discharge the flushing medium and is integrally fixed, and the threaded button of the outer tube is connected between each double-wall drill pipe to ensure the transmission of torque and pressure.
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) |
| 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 |
Advantage
Our reverse circulation drill pipes and drill pipes consist of hardened alloy steel drill pipe joints, heavy-duty seamless drill pipes and high tensile and wear-resistant inner pipes. With our years of experience in designing and manufacturing tough and wear-resistant RC drill pipes, all aspects of material and production management have been optimized. The result is a high-quality reverse circulation drill pipe that enables your RC rig to be produced efficiently day after day.
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.
