China RC Drill Bits

REVERSE CIRCULATION PERFORMANCE TOOLING
Reverse Circulation (RC) drilling is used to collect rock samples quickly and efficiently using a large rotary drill and air compressor. The high speed and lower cost per meter of RC drilling makes it ideal for obtaining mineral samples in the early phases of an exploration project.
Reverse Circulation Drilling
Basics of Reverse Circulation Drilling
RC drilling uses rods with inner and outer tubes, the drill cuttings are returned to surface inside the rods. The drilling mechanism is a pneumatic reciprocating piston known as a hammer driving a tungsten-steel drill bit.
RC drilling utilises much larger rigs and machinery and depths of up to 500 metres are routinely achieved. RC drilling ideally produces dry rock chips, as large air compressors dry the rock out ahead of the advancing drill bit.
RC drilling is slower and costlier but achieves better penetration than RAB or air core drilling; it is cheaper than diamond coring and is thus preferred for most mineral exploration work.
Reverse circulation is achieved by blowing air down the annulus of the rod, the differential pressure creating air lift of the water and cuttings up the inner tube which is inside each rod. It reaches the deflector box at the top of the drill string then moves through a sample hose which is attached to the top of the cyclone.
The drill cuttings travel around the inside of the cyclone until they fall through an opening at the bottom and are collected in a sample bag. For any drill hole there will be a large number of sample bags, each one marked to record the location and drilling depth that the sample was obtained.
The collected series of sample bag cuttings are later taken for analysis to determine the mineral composition of the drill hole. The analysis results of each individual bag represents the mineral composition at a particular sample point in the drill hole. Geologists can then survey the drilled ground analysis and make decisions about the value of the overall mineral deposit.
For the supply of RC drilling rods and equipment please visit our sponsors, ROSCHEN GROUP LIMITED at roschen.en.made-in-china.com .
We are a leading manufacturer of rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, tophammer button bits, coupling, cross bits, drill rods located in Germany, China(joint-venture).
We have rich experience in this field of DTH hammers and bits for 60 years.
Product specifications: RE004 RC Bits
Diameter No x Button diameter mmButton angleFlusing holesShroud Dia mmWeight(kgs)Part NomminchGauge ButtonsFront Buttons1144 1/28x146x1435211211.5RE004-1141184 5/88x146x1435211611.7RE004-1181214 3/48x146x1435211912RE004-12112758x148x1435212512.4RE004-127
ROSCHEN RC hammer bit technical data:
ROSCHEN Reverse Circulation Bits SpecificationsRE531 RC bitsROSCHEN Code:ROS RC 30DiameterNo x Button diameter mmButton angleFlusing holesShroud Dia mmWeight (kgs)Part NomminchGauge ButtonsFront Buttons863 3/86x124x12352844.2RE531-86893 1/28x128x12352874.3RE531-89953 3/48x128x12352934.6RE531-9510248x128x123521004.9RE531-102RE004 RC bitsROSCHEN Code:ROS RC 40DiameterNo x Button diameter mmButton angleFlusing holesShroud Dia mmWeight (kgs)Part NomminchGauge ButtonsFront Buttons1144 1/28x146x1435211211.5RE004-1141184 5/88x146x1435211611.7RE004-1181214 3/48x146x1435211912RE004-12112758x148x1435212512.4RE004-127RE542ROSCHEN Code:ROS RC 50DiameterNo x Button diameter mmButton angleFlusing holesShroud Dia mmWeight (kgs)Part NomminchGauge ButtonsFront Buttons 1214 3/48x146x1435211910.6RE542-1211244 7/88x148x1335212210.8RE542-12412758x148x1435212511RE542-1271305 1/88x1410x1435212811.3RE542-130RE543ROSCHEN Code:ROS RC 50DiameterNo x Button diameter mmButton angleFlusing holesShroud Dia mmWeight (kgs)Part NomminchGauge ButtonsFront Buttons1244 7/88x148X1335212210.8RE543-12412758x148X1435212511RE543-1271305 1/88x1410x1435212811.3RE543-1301335 1/48x1610x1435213111.8RE543-133RE545ROSCHEN Code:ROS RC 50DiameterNo x Button diameter mmButton angleFlusing holesShroud Dia mmWeight (kgs)Part NomminchGauge ButtonsFront Buttons1244 7/88x148X1335212213.3RE545-12412758x148X1435212513.5RE545-1271335 1/48x1610x1435213113.8RE545-1331365 3/88x166x16+3x1435213414.2RE545-136PR40 RC bitROSCHEN Code:ROS RC 50DiameterNo x Button diameter mmButton angleFlusing holesShroud Dia mmWeight (kgs)Part NomminchGauge ButtonsFront Buttons1244 7/88x148X1335212214.3PR40-12412758x148X1435212514.7PR40-1271335 1/48x1610x1435213115.2PR40-1331385 4/98x166x16+3x1435213615.8PR40-138PR52 RC bitROSCHEN Code:ROS RC 55DiameterNo x Button diameter mmButton angleFlusing holesShroud Dia mmWeight (kgs)Part NomminchGauge ButtonsFront Buttons1335 1/48x1610x1435213111.2PR52-1331365 3/88x166x16+3x1435213411.5PR52-1361405 1/28x166x16+3x1435213811.9PR52-1401435 5/88x166x16+3x1435214112.3PR52-143RE547 RC bitROSCHEN Code:ROS RC 55DiameterNo x Button diameter mmButton angleFlusing holesShroud Dia mmWeight (kgs)Part NomminchGauge ButtonsFront Buttons1365 3/88x166x16+3x1435213415.1RE547-1361405 1/28x166x16+3x1435213815.5RE547-1401435 5/88x166x16+3x1435214115.8RE547-1431465 3/48x166x16+3x1435214416.3RE547-146PR54ROSCHEN Code:ROS RC 55DiameterNo x Button diameter mmButton angleFlusing holesShroud Dia mmWeight (kgs)Part NomminchGauge ButtonsFront Buttons1365 3/88x166x16+3x1435213418.2PR54-1361405 1/28x166x16+3x1435213818.5PR54-1401435 5/88x166x16+3x1435214118.8PR54-1431465 3/48x166x16+3x1435214419.2PR54-146Notes: Metzke, Remet thread is available!Any special size of Reverse Circulation bits will be available by requests.
Shank can be available:
1). 4'' RC Bits:Diameter (104mm-127mm); Shank type: RE004/RE004R;RE542
2). 5'' RC Bits:Diameter(113mm-146mm) ; Shank type: RE543,RE545,RE547;PR40,PR52,PR54; MX5456
3). 6'' RC Bits: Diameter(152-190mm); Shank type: RC62/RC62R;
4). 8'' RC Bits: Diameter(190-250mm); Shank type: RC82/RC82R;
5). 10'' RC Bits: Diameter(250-370mm); Shank type: RC100/RC100R.
Other size can be upon to customer's requirements

We can also provide related products DTH hammers, ODEX system, symmetrix systems, slide block drilling systems, etc and DTH drilling pipes for various thread API REG, API IF, BECO, etc
Product photos
Quality warranty:
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.
Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damagement during transportation. Also we can customize package according to your special requests.
Production time:
Generally need 15-25 days
Transportation:
By air, By Express or By sea according to your requests.

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 bit, PDC bit, reaming shell, core barrel, casing, drill rod, SPT equipment, Shelby sampler, drill rig and other drilling parts.
They are used for mineral exploration, geological drilling, geotechnical engineering and soil sampling.
Q: How about the delivery terms?
1. Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery.
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air, sea, train.
Q: How about discount?
Q: Do you accept sample order?
A: Yes sure, please contact us for details.
Q: How about your after-sales service?
A: As a manufacturer, we offer promt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.
Q: How does your company control the quality?
A: Quality first. In order to guarantee high quality for our products, Roschen always makes a serious inspection for all products and raw materials in strict procedure. We have obtained certificate of ISO9001:2000 in 2004.

For more information, please contact:

ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED




Website: http://roschen.en.made-in-china.com ; http://roschen.en.made-in-china.com