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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. |
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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. |
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Waterways | Various waterways are available for diamond impregnated bits. Differing waterways allow for better flushing in various ground conditions and drilling systems. |
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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. |
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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 |