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| Categories | Diamond Core Drill Bit | 
|---|---|
| Brand Name: | ShiFeng | 
| Model Number: | Couple tube 56 | 
| Place of Origin: | WUXI | 
| MOQ: | 10 Piece/Pieces | 
| Payment Terms: | T/T, Western Union | 
| Supply Ability: | 200 Piece/Pieces per Week | 
| Delivery Time: | 15 work days | 
| Packaging Details: | packed in box | 
| Material: | Diamond and Metal | 
| Diameter: | 56mm | 
| Weight: | 0.5kg | 
| HRC: | 5-50 | 
| Color: | Customized | 
Hard Rock Core Hole Bits , 56 Hollow Core Diamond Drill Bits Fast Drilling Speed
We specialized in manufacturing Drill Rods, Casings, Core barrels, Diamond bits, Reaming shells, Drill rigs, PDC bits and other drilling tools & equipment for geological exploration, mining, geotechnical, dam grouting, water well and horizontal directional drilling.
We can provide
1. Test Report & MTC
2. Ready stock for normal sizes
3. Customized sizes welcomed
4. One stop service
| Bit type | Description | Set type of Diamond | Remarks | 
| Wire-line | dia. 56, 59, 75 and 95, BQ, NQ, HQ | Impregnated | |
| Couple tube | dia.56, 59, 75, 76, 91, 110, 130 and 150 | Impregnated | |
| Single tube | dia.46,56, 59,75, 91, 110, 130, 150, 171, 223 and 300 | Impregnated | 
| Impregnated Diamond Bits | ||
| Size | GEOTEC bits are available in all standard drilling sizes. Also, non-standard sized bits can be produced according to requirements from clients. | |
| Crown Height | GEOTEC offers crown impreg depths of 9mm, 12mm, 16mm and 25mm. The taller crown heights provide improved bit stability and reduced vibrations, enhancing bit life and performance. | |
| Waterways | Various waterways are available for diamond impregnated bits. Differing waterways allow for better flushing in various ground conditions and drilling systems. | |
| Threads | Standard threads as well as regional thread types required by clients are available. | |
| Compatibility | Our diamond bits and reaming shells are designed to be compatible
with all standard core barrels from other suppliers. | |
| Matrix | Impregnated bits matrices can be selected according to the chart below. | |
| Series number | Rock | 
| 11 | magnetit, metamorphschist, gneiss, granite, basalt, gabbro, rhyolite, diorite, conglomerate, taconite. | 
| 10 | magnetit, metamorphschist, gneiss, granite, basalt, gabbro, rhyolite, diorite, conglomerate, taconite. | 
| 9/10 | andesite, pegmatite, hematite, magnetit, metamorph schist, gneiss, granite, basalt, gabbro, rhyolite, diorite. | 
| 9 | andesite, pegmatite, hematite, magnetit, metamorph schist, gneiss, granite, basalt, gabbro, rhyolite, diorite. | 
| 8 | dolomite, marble, peridotite, andesite, pegmatite, hematite, magnetit, metamorph schist, gneiss, granite, basalt. | 
| 7/8 | dolomitic limestone, schist, serpentine, hard & mica schist, siliceous limestone, dolomite, marble, peridotite, andesite, pegmatite, hematite. | 
| 7 | dolomitic limestone, schist, serpentine, hard & mica schist siliceous limestone, dolomite, marble, peridotite, andesite, pegmatite, hematite. | 
| 6/7 | med-hard limestone, hard limestone, hard shale, dolomitic limestone, schist, serpentine, hard & mica schist, siliceous limestone, dolomite, marble, peridotite. | 
| 6 | med-hard limestone, hard limestone, hard shale, dolomitic limestone, schist, serpentine, hard & mica schist, siliceous limestone, dolomite, marble, peridotite. | 
| 5 | claystone, sandy limestone, soft schist, med-hard sandstone, siltstone, alluvial deposits, calcitic limestone, med-hard limestone, hard limestone, hard shale, dolomitic limestone. | 
| 4 | claystone, sandy limestone, soft schist, med-hard sandstone, siltstone, alluvial deposits, calcitic limestone, med-hard limestone, hard limestone, hard shale, dolomitic limestone. | 
| 3 | soft shale, chalk, marly shale, med-hard limestone, salt, frozen soil&ice, soft sandstone, sandy shale, claystone, sandy limestone, soft schist, med-hard sandstone, siltstone, alluvial deposits, calcitic limestone. | 
| 2 | soft shale, chalk, marly shale, med-hard limestone, salt, frozen soil&ice, soft sandstone, sandyshale, claystone, sandy limestone, soft schist, med-hard sandstone, siltstone, alluvial deposits, calcitic limestone. | 
| 1 | sand, soft shale, chalk, marly shale, med-hard limestone, salt, frozen soil&ice, soft sandstone, sandy shale, claystone, sandy limestone, soft schist. | 
| Products | Problem | Settlement | 
| Diamond core bit | 1: size or technical parameters (matrix etc.) are different from the requirement of customers’ order | Replace | 
| 2: thread can not fit customers’ barrel | Repair or replace | |
| 3: break down a piece from matrix, and the volume of the piece exceed 2mm*2mm*2mm, and such break is not caused by drilling | Replace | |
| 4: matrix falling not caused by drilling | Replace or return | |
| 5: groove on matrix caused by manufacturer | Replace or return | |
| 6: drilling speed is obvious slower than congener products cause by manufacturer | Replace, and each item quantity does not exceed 3 pieces | |
| 7: bit life is obvious short cause by manufacturer | ||
| 8: breaking down of matrix, falling matrix, groove and short bit life caused by operating reasons- drill rod sticking, premature failure of the bit crown and hole bottom not to be cleaned | Be excluded from quality guarantee | |
| 9: short bit life or no penetration caused by drilling machine, drilling techniques or parameters | ||
| 10: properly worn and the matrix is finished | ||
| 11: thread damaged or distorted due to improper operation | ||
| 12: Steel body cracked in drill | ||
| Reaming Shell | 1: thread is not correct | Repair or return | 
| 2: steel body cracked in drill | Repair or return | |
| 3: PCD strips falling | Repair or return | 
|   | 
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                                                            Single tube 130 Diamond core drill bit Hard rock geological drilling impregnated
                                                    
                        
                     Single tube 130 Diamond core drill bit Hard rock geological drilling impregnated
                                                                                    
                        
                        
                        
                                                            Single tube 130 Diamond core drill bit Hard rock geological drilling impregnated
                                                    
                        
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                                                            59 6mm 2 Inch Diamond Core Drill Bit Good  Sharpness Stable Performance
                                                    
                        
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                                                            32mm 30mm Diamond Core Drill Bit 35mm 38mm 40mm International Standard
                                                    
                        
                     NQ Reaming Shell
                                                                                    
                        
                        
                        
                                                            NQ Reaming Shell