Dual Wall Drill Pipe for Reverse Circulation golden drilling
Dual Wall Drill Pipe for Reverse Circulation golden drilling
Dual Wall Drill Pipe for Reverse Circulation
Product Description
Dual-wall drill pipes is used for R. C. drilling, when it works, circulating medium is following through the gaps between the dual-wall pipes, carrying samples out of the holes efficiency, meanwhile, it can protect the hole from collapse, matching up with our R.C. air(water) swivel, GQ air-driven hollow DTH hammer can complete getthe samples constantly.
| Technical parameter | ||||
| Description | Outer Tube | Inner Tube | ||
| O.D(mm) | I.D(mm) | O.D(mm) | I.D(mm) | |
| 73mm/41 | 73 | 63 | 45 | 41 |
| 89mm/43 | 89 | 76 | 47.5 | 43 |
| 102mm/39 | 102 | 88.6 | 50 | 39 |
FAQ
How to order?
Please send us your inquiry with detail item description or with Model number.
If there is no packing demand we take it as our regular exported standard packing.
We will offer you an order form for filling. We will recommend you the most suitable model according to information you offered.
You send us your detail requirement, we provide quotation to you.
Can I expect a quality products?
All the production and processing are strictly according to ISO 9001:2008 and API standard. At the same time, mature production technology ensuring the quality satisfy international request. We also welcome the third party inspection, such as BV, SGS and TUV.
The information you may like to know before Payment:
1. Methods of Payment:
T/T (Telegraphic Transfer) or L/C at sight
2. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
3. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
Best regards,
Phiger Leo
Direct Line: 0086-137-6419 5009
WeChat/WhatsApp:: +86-137-6419 5009
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ROSCHEN@ GROUP LIMITED
ROBERT ROSCHEN@ LIMITED
ROSCHEN@ HOLDINGS LIMITED
HEFEI ROSCHEN@ TOOL CO., LTD.
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