Double Wall Drill Pipes Reverse Circulation Drill Pipe For Re542 Re543 Re545 Re547 RC Reverse Circulation DTH Hammer

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2022年07月10日

RC Drill Pipe Remet, Metzke, Faber thread for reverse circulation golden drilling

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Double Wall Drill Pipes Reverse Circulation Drill Pipe for Re542 Re543 Re545 Re547 RC Reverse Circulation DTH Hammer



Reverse Circulation RC Drilling Rods is also called Double wall drill pipe, double drill pipe or Dual Wall drill pipe. It consists of two layers of inner and outer drill pipes (called inner pipe and outer pipe). The inner and outer pipes constitute an annular gap, which is a channel for pumping the flushing medium to the bottom of the hole when hydraulic rock drilling and center sampling drilling. The central hole of the inner tube is fixed as a whole by discharging the flushing medium, and each double-walled drill pipe is connected with the screw of the outer tube to ensure transmission of torque and pressure. The inner tube is usually connected by a plug-in method, which generally only serves as a flushing medium. Therefore, a sealing device is required at the plug-in place.



Double Wall Drill Pipes are used in drilling of wells with diameter 84 and 93 mm and depth up to 300 m in soils of II-V drill ability classes with seams of soils up to VII drill ability class in the fulfilment of all necessary prospecting and geochemical operations, in geological mapping and exploration of deposits of solid minerals.


The reverse circulation drill rod has four threads which adds to machine operating time. The purpose of the two extra threads is to allow the inner tube to be replaced in the field. It also allows the driller to replace the box tool joint with a new tool joint, without welding and can be done at the site. - We use heat threaded 4130 alloy tool joints; this alloy allows driller to employ a hard facing program without fear of embitterment. We use a micro-alloy midsection (mid-body), ST52V, 90KS1 MIL VLD possessing a superior abrasion resistance. Our inner tube midsection (mid-body) is a heavy-wall mechanical tube, not a pipe. The inner tube is fixed and won't vibrate under most conditions. The inner tube ends are made from a heat treated alloy and the male end is machine finished after welding for perfect alignment. The o-ring retainers absorb the percussion forces to eliminate problems arising from the transfer of vibration and torque loads to the outer pipe.


 


Competitive Advantage


High strength chromium-molybdenum steel with high fatigue strength and excellent wear resistance 



 

RC Drill Pipe Specifications
Reverse circulation drill pipe/Double wall drill pipe/Dual Wall drill pipe
Outer tube O/D inInner tube inLerngth mType of threadRange of drill
3.51.53 ~ 6Remet, Metzke, Matrix, others4-1/8-4-3/4
423 ~ 6Remet, Metzke, Matrix, others4-3/4-5-1/2
4.52 & 2-1/23 ~ 6Remet, Metzke, Matrix, others5-1/8-6
6.62533 ~ 6Remet, Metzke, Matrix, others7-7/8-15
10.7553 ~ 6Remet, Metzke, Matrix, othersOver 15




How to order of RC Drill Rods ? 




Effective Length + Out Tube O.D. + Inner Tube O.D. + Too Joints Connection Thread







For more information, pls contact us:


 

Phiger Leo

Direct Line: 0086-137-6419 5009

WeChat: +86-137-6419 5009 


WhatsApp: +86-137-6419 5009      

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ROSCHEN@ INC.                                 

ROSCHEN@ GROUP LIMITED

ROBERT ROSCHEN@ LIMITED

ROSCHEN@ HOLDINGS LIMITED    

HEFEI ROSCHEN@ TOOL CO., LTD.

ROSCHEN@ GEOLOGICAL TOOL CO.,LTD.

SHANGHAI ROSCHEN@ INTERNATIONAL CO., LTD.

ROSCHEN@ GEOLOGICAL INSTRUMENTS CO., LTD.  

EMAIL: roschen@roschen.com ; roschen@roschen.net

Website: http://www.roschendrill.com

http://www.roschenmining.com

http://www.roschendrilling.com  

http://www.explorationcoredrilling.com   

http://www.roschen.net 

http://www.roschen.cn

http://www.roschen.com 

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