WK114/52mm Double Wall Drill Pipe Full Hole Reverse Circulation

Brand Name:Long way
Delivery Time:20-30 working days, which will be adjusted according to different products and inventory
Payment Terms:T/T
Place of Origin:Hebei China
Price:Negotiable
Packaging Details:With iron
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Location: Langfang Hebei China
Address: Yongqing Industrial Zone, Langfang, Hebei, China
Supplier`s last login times: within 48 hours
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Product Details

WK114/52 mm Full Hole Reverse Circulation Double Wall Drill Pipe



Product Description:

Double-arm drill pipe is also called double-layer drill pipe. It is composed 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. However, plug-in connections are often used between the inner pipes, which generally only serve as a circulating flushing medium. Therefore, a sealing device should be installed at the insertion point.


Double wall drill pipe


TypeO.D.of the outer tube (mm)I.D.of the inner tube (mm)Outer dianeter of joint (mm)Type of threadsEffective length (m)
WB114/651146515641F6
WB127/7612776162/16841/21F6 , 9.5
DB127/761277618451/2FH9.5
WB140/88139.78818451/2FH6,9.5
WB219/130219130240Factory standard6,9.5
WK76/327632783" Remet3
WK102/41102411034" Remet3 , 6
WK114/52114.3521164 1/2" Remet3 , 6
WK114/38114.338114.34 1/2" Metzke3 , 6
WK114/50114.350114.34 1/2" Remet3 , 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.


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WK114/52mm Double Wall Drill Pipe Full Hole Reverse Circulation

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