| After-sales Service: | Yes |
|---|---|
| Warranty: | 6 Months |
| Certification: | ISO9001:2015 |
| Standard: | GB/T2828.1-2003 |
| Surface Treatment: | Painting |
| Manufacturing Process: | Machining |
| Samples: |
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| Customization: |
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Introduction of R.C. Drilling and R.C. DTH Hammers
It has the following characteristics:
R.C. Drilling,referred to as "Center Sample Recovery" or "Dual Wall Drilling", employs a Dual Wall Pipe where the drilling medium, normally high pressure air,is passed between the outer and inner tubes down to the face of the drilling bit where it is returned up the centre tube along with the sample cut by the drill bit.
The use and the advantages of the R.C. DTH Hammers:
No contamination
The R.C. System collects sample through the recovery holes in the face of the drill bit immediately as the cuttings or sample is formed.The drilled sample does not have to travel the length of the hammer where contamination and loss of sample takes place.
Higher Production
In broken and fractured ground conditions, the R.C. will often out perform the conventional hammer in terms of penetration rates.
Dry Sample
Even in certain water bearing stratas it is still possible to collect a dry sample because the cuttings(sample) are collected as they formed through the face of the drill bit.
Higher Sample Recovery
Because the sample is collected through the face of the drill bit there is no loss of sample when drilling through broken or fractured ground. And since the bit matched to the chuck size,there is very little bypass of sample and recovery rates of up to 98% are generally achievable.
| Item Description | Part Number | |
| 1 | Circlip of Top Sub | MDRC4-E004-01 |
| 2 | "O" Ring of Adaptor Screen | MDRC4-E004-02 |
| 3 | Adaptor Screen | MDRC4-E004-03 |
| 4 | "O" Ring of Adaptor Screen | MDRC4-E004-04 |
| 5 | Top Sub | MDRC4-E004-05 |
| 6 | Plunger | MDRC4-E004-06 |
| 7 | "Y" Ring of Plunger | MDRC4-E004-07 |
| 8 | Spring | MDRC4-E004-08 |
| 9 | Sample Tube Upper | MDRC4-E004-09 |
| 10 | "O" Ring of Sample Tube | MDRC4-E004-10 |
| 11 | "O" Ring of Sample Tube | MDRC4-E004-11 |
| 12 | Sample Tube | MDRC4-E004-12 |
| 13 | Compression Buffer | MDRC4-E004-13 |
| 14 | Air Distributor | MDRC4-E004-14 |
| 15 | "O" Ring of Air Distributor | MDRC4-E004-15 |
| 16 | Inner Cylinder | MDRC4-E004-16 |
| 17 | Piston | MDRC4-E004-17 |
| 18 | Piston Case | MDRC4-E004-18 |
| 19 | Bush Drive Sub | MDRC4-E004-19 |
| 20 | Bit Retaining Ring | MDRC4-E004-20 |
| 21 | "O" Ring of Bit Retaining Ring | MDRC4-E004-21 |
| 22 | Shroud | MDRC4-E004-22 |
| 23 | Drive Sub | MDRC4-E004-23 |
| 24 | Drill Bit | MDRC4-E004-24 |
The information you may like to know before order:
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Based on order quantity, normally it takes 25 days for production.
Only 2 or 3 days if we have stock on your request size.
3. 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.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
5. After Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time
c. Free replacement will provide once the failure confirmed caused by our product quality
Suppliers with verified business licenses
Audited Supplier 
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