Hunan New Diamond Construction Machinery Co., Ltd.
| Payment Terms | L/C, T/T, Western Union |
| Supply Ability | According to order quantity |
| Delivery Time | 5-8 work days |
| Packaging Details | Carton packaging and wooden box packing |
| Type | Symmetric Overburden Drilling Equipment |
| Machine Type | Drilling Equipment |
| Material | Carbon Steel, High Quality Alloy Steel |
| Processing Type | Forging |
| Use | Mining |
| Brand Name | New Diamond |
| Model Number | NSOD |
| Certification | API |
| Place of Origin | Hunan, China (Mainland) |
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Product Specification
| Payment Terms | L/C, T/T, Western Union | Supply Ability | According to order quantity |
| Delivery Time | 5-8 work days | Packaging Details | Carton packaging and wooden box packing |
| Type | Symmetric Overburden Drilling Equipment | Machine Type | Drilling Equipment |
| Material | Carbon Steel, High Quality Alloy Steel | Processing Type | Forging |
| Use | Mining | Brand Name | New Diamond |
| Model Number | NSOD | Certification | API |
| Place of Origin | Hunan, China (Mainland) | ||
| High Light | concentric drilling system ，dth drilling system | ||
Description
The pilot bit is attached to any common DTH hammer shank or top hammer rod thread.
The casing shoe is welded to the casing. The pilot bit and ring bit are locked together by the bayonet coupling. They drill a hole large enough to allow the casing to be pulled into the hole. The pilot bit and ring bit rotate with the drill string while the casing shoe and casing do not rotate. When required depth is reached, the pilot bit is unlocked by a slight reverse rotation of the drill string. The drill string and pilot bit will be retrieved through the casing, the ring bits and casing shoe will be left in the hole for permanent casing system. Also the ring bits and casing can be retrievable through the special design for ring bits and casing shoe. We can manufacture both permanent Symmetric and Retrievable Symmetric system which can meet your comprehensive requirement.
The below size of Symmetric systems which are available, and the special design is upon customer’s requirement:
Symmetric 114, Symmetric 127, Symmetric 140, Symmetric 146, Symmetric 168,
Symmetric 178, Symmetric 195, Symmetric 219, Symmetric 243, Symmetric 273.
NEW DIAMOND Symmetric overburden casing drilling system
Symmetric is a system comprised of an ingeniously simple concentric method of drilling through overburden with casing.
Symmetric can drill straight holes at any angle (including horizontal) and to depths beyond 100 meters. Working together as one efficient drill bit, the components are made up of:
A pilot bit with large internal flushing holes and external flushing grooves.
Symmetrical ring bit (reamer) with internal bayonet coupling
Casing shoe for driving of casing.
Applications
Widely used in mines, quarries, earthworks and other engineering drilling blasting hole, guardrail hole, mountain reinforcement, anchorage and other engineering holes,geothermal exploration hole, Well bore and other fields.
Specifications
| Product model | Casing OD(mm) | Casing wall max (mm) | Ring bit OD(mm) |
Ring bit OD (mm) |
Pilot bte OD(mm) | hammer |
| NSOD114 | 114.3 | 6/10 | 91/78 | 128/124 | 100/92.5 | ND35 |
| NSOD127 | 126.7 | 7 | 99 | 140 | 110 | ND35 |
| NSOD140 | 139.7 | 7/10 | 116/94 | 154/150 | 124/117.5 | ND45/NQL4 |
| NSOD168 | 168.3 | 8/12.7 | 142/121 | 182/178 | 150/140 | ND55/NQL5 |
| NSOD178 | 178.3 | 10 | 145 | 195 | 156 | ND55/NQL5 |
| NSOD194 | 193.7 | 6/12.7 | 167/148 | 212/203 | 180/167 | ND65/NQL6 |
| NSOD219 | 219.1 | 7/12.7 | 186/167 | 234 | 203/191 | ND65/NQL6 |
| NSOD273 | 273.0 | 8/12.7 | 232/219 | 292 | 255/246 | ND85/NQL8 |
| NSOD325 | 323.9 | 8/12.7 | 281/270 | 342/342 | 306/297 | ND85/NQL8 |
| NSOD406 | 406.4 | 12.7 | 328 | 419 | 374 | NSD10/N125 |
| NSOD508 | 508.0 | 15 | 412 | 526 | 470 | ND475/SD15 |
| NSOD609 | 609.6 | 15 | 513 | 637 | 570 | ND525/SD18 |
Feature Advantage
1. price commitment: in order to ensure the high reliability of products, high-quality brand products are selected for raw material selection. Under the same competitive conditions, no more products will be provided to customers at a favorable price, based on the reduction of the technical performance of products.
2. Quality commitment: product manufacturing and testing have quality records and inspection data; the performance of the product can withstand customer inspection.
3. Customer service: in order to create new diamond brand, enhance the visibility of enterprises,establish corporate image, we serve customers with the principle of "preferential prices, good service, reliable product quality"principle.
Company Details
Business Type:
Manufacturer
Year Established:
2011
Total Annual:
1,000,000-40,000,000
Employee Number:
100~300
Ecer Certification：
Active Member
Hunan new diamond Construction Machinery Co., Ltd. is a professional engaged in the research and manufacture of drilling and pneumatic tools of modern high-tech enterprises。 The main research and manufacture of high air pressure DTH hammer, drill hole, drill pipe and drilling ... Hunan new diamond Construction Machinery Co., Ltd. is a professional engaged in the research and manufacture of drilling and pneumatic tools of modern high-tech enterprises。 The main research and manufacture of high air pressure DTH hammer, drill hole, drill pipe and drilling ...
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