Stone Drilling Tool Granite Marble Diamond Core Drill Bits

1. High efficiency and long lifespan
2. Competitive price and stable quality
3. Production capacity: 40,000 pieces/month
4. Various diamond drill bit sizes and types available
5. Good drilling result: smooth drilling and no chipping

Stone Drilling Tool Granite Marble Diamond Core Drill Bits

Experienced manufacturer of Stone Drilling Tool Granite Marble Diamond Core Drill Bits, we supply diamond segments, diamond saw blades, diamond wire saw and diamond grinding tools for stone factories, quarries and wholesalers all over the world.


Drilling granite, marble, stone, concrete, bricks, blocks, rock and concrete with steel.
1.For diameter from 10mm to 38mm, high quality 10mm high quality crown (ring) diamond segments are used, it would provide an easy start-up when hand held drilling.
2. For core bits diameter from 40mm to 500mm, high quality 10mm high diamond segments with castellated tips are adopted to insure an easy start-up and fast opening of the segment. Usually customers will choosing the thread of 1-1/4-7.

Details of diamond drilling bits

1. Popular adaptor size: diameter 6/8/10mm shank, M14 thread, M16, G1/2", 5/8"-11 thread and 1-1/4"-7 UNC etc.
2. Segments including:1)crown type; 2) turbo type; 3)roof type 4)straight type for you to choose.

Packaging and Shipping for Diamond Drill Bits

Inner packing: a diamond drill bit is covered by antirust paint and plastic, then packed in a paper box; outside packaging is according to the transport way, if by air, we recommend carton package which will reduce the weight; if by sea, we recommend crate which is seaworthy. Other packaging is also available upon your request.
Urgent order with less weight or samples, courier service is recommended;
Normal (regular) order which weight over 45kgs, delivering by air is recommended;
Big diameter saw blades or heavy weight products, shipping by sea is recommended.
Edgestone will offer advices according to the actual order requirements.

Our Services

1. Fine raw materials are used for processing, high grade raw materials, imported cobalt powder and high-quality diamond single crystals, to ensure the best performance of our products.
2. Customized designs are available. We can also help customers design and develop new products, and adjust cutting efficiency and lifespan upon your request.
3. Knowledgeable sales representatives are available to reply all inquiries and e-mails within 24 hours.
4. Every details will be confirmed with you before production.
5. Each processing would be completed by our skillful worker.
6. Strict quality management system. During the whole production process, from raw material choosing, processing to packing, our quality assurance people will strictly control each single and every process to guarantee quality standards and punctual delivery.
7. Detailed and clear pictures will be sent before packing and loading for you.
8. We will keep you update of the order and shipping status till you get the products smoothly.

If you're interested in Stone Drilling Tool Granite Marble Diamond Core Drill Bits, just feel free to contact us, we will keep providing excellent service and good quality products for you.

Contact Info.

Sales Manager: Adam Li
Phone/WhatsApp: 0086-15805032000
Skype: adam-li@outlook.com

The sleeve can be used more than 20 times continuously. Al2 03 gasoline rubber solution configuration method: 300 days to fine Al2 03 'concentration of 12% petrol rubber solution 20%, 50% of gasoline: first with a small amount of gasoline Al203 wetting and mixing, so that it does not polymerize, and then add to each other Quantitative rubber solution and gasoline, and stir evenly  . In the use of gasoline thickened after volatilization can be added to the amount of gasoline and mix well. (5) Loading. 1 Place the bottom mold cover for charging on the turntable, put the steel in the rest, and then insert the good sintered body mold from the upper end of the steel body so that the mold and the bottom mold sleeve fit together. 2 Precipitate the quantitative skeleton powder, which has been preheated at a constant temperature of 70°C, and pour it into the cavity along the circumferential gap between the steel body and the die, and then tap the rotor and the outer wall of the die with a rod. After the powder enters the mold cavity, the upper part of the powder is slightly flattened, and then a little bone powder is added and wiped to make it slightly higher.  At the upper end of the mold, to create capillary action of the impregnation channel.    3 Lift the upper end of the steel body and put it out of the loading bottom mold, and then insert it into the graphite bottom mold cover coated with Al2 03 gasoline rubber solution. 4 Insert the stamper coated with Al203 gasoline rubber solution. 5 Add a given amount of knotted metal, and sprinkle a suitable amount of shed sand on it. (6) Sintering into the furnace. The well-loaded molds are loaded into a box-type electric furnace for sintering, and two reamers can be sintered at one time. Because of the oxidation of graphite molds at elevated temperatures to produce a protective atmosphere of carbon monoxide, special protective gases do not have to be introduced. The sintering temperature should be higher than the melting point of the metal of the junction metal by more than 30°C. When BZnl520 is used as the entrapped metal, the sintering temperature is 1100°C, and it needs to be kept for 20 minutes after reaching the sintering temperature. (7) Blast cooling and mold release. After the insulation is completed, the combined mold is clamped out with a pliers and a weight is quickly added to the upper end of the mold or slightly pressurized on the small press to achieve the purpose of shaping the upper end of the carcass and to easily remove the remaining metal. . The assembled mold after leaving it allowed to cool in the air. After cooling, it is easy to remove the bottom mold sleeve and the mold, remove the remaining stripping metal, knock the mold open, and remove the reamer. (8) Sand blasting and machining of the reamer. After removing the reamer, the carcass shall be blasted to remove the graphite residue on the surface of the carcass. Then follow the drawing requirements for machining. Stone Drilling Tool Granite Marble Diamond Core Drill Bits . (9) Inspection and packing of the reamer. After the boring machine is finished, it is necessary to check the following items: 1 The carcass must be free of cracks and appearance defects: 2 The hardness of the carcass must meet the requirements; 3 The dimensions must meet the design requirements. The carcass must be concentric with the two ends of the thread, and its maximum misalignment tolerance It is 0.lOn1m. The reamer that meets the quality requirements must be equipped with a certificate, fill in the product card, and pack it into the warehouse. The shape of the carcass for the manufacture of the reamer by the pressureless impregnation method depends on the skeleton powder charging form, and the volume of the skeleton powder after sintering Since it is basically the same before sintering, it is extremely advantageous to use this method to produce a spiral reamer having a complicated shape. It can not only guarantee the high accuracy of the reamer, but more importantly, it has a uniform density in each part of the carcass, so as to ensure the good performance of the carcass.