Recycle Ring Bit Casing Drilling

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Recycle ring bit casing drilling bit Product details Rock drilling tools factory KINGDRILLING professionally produce casing drilling system by DTH hammer which designed to drill and case a hole simultaneously through unstable ground conditions. The system consists of a driver bit,Website:http://www.mingdthbit.com,integrated ring with casing shoe.The internal flushing grooves together with the built-in casing shoes gives a good seal to the button of the drilling hole, and thus mini missing the disruption of the surrounding of the drill hole. Working principle: 1. Ring bit and casing shoe assembly is welded to casing prior to drilling. Lock the assembly into pilot bit with hammer. The pilot bit’s upper shoulder engages the shoulder of the casing shoe.  2. Hammer’s percussive energy is transferred through the pilot and ring bits, crushing rock . Part of impact energy advances casing.  3. On completion of drilling and casing , the drill string with pilot bit is retrieved by a slight reverse rotation to unlock the bayonet coupling . The ring bit stays in the hole , and can be recovered only if the casing is retrieved  4. Drilling continues to the desired depth in the bedrock using a conventional drilling. Casing drill Bits Advantages： 1. Full face head design for faster penetration and straighter hole, 2. Less torque is required. 3. It can drill in vertical, horizontal or any direction 4. Minimize disruption to the drilled hole 5. Varied ring bit diameters to suit different casing requirement Model External Dia.(mm) Casing Dia.(OD*ID) Spline MK-MRING90 125 114*102 MACH33, DHD3.5 MK-MRING115 155 139*127 DHD340, SD4, QL4 MK-MRING140 188 168*153 DHD350, SD5, QL5 MK-MRING165 215 194*181 DHD360, SD6, QL6 MK-MRING190 238 219*206 DHD360, SD6, QL6 MK-MRING215 276 254*240 DHD380, SD8, QL8 MK-MRING235 293 273*254 DHD380, SD8, QL8 MK-MRING240 293 273*260 DHD380, SD8, QL8 MK-MRING280 345 323*303 SD10 MK-MRING315 375 355*335 SD10 MK-MRING365 432 406*387 N120, N125, SD12 MK-MRING460 530 508*483 N125, N180 MK-MRING510 580 559*533 N180 MK-MRING560 635 610*584 N180 MK-MRING610 695 660*632 N240 MK-MRING660 735 711*685 N240 MK-MRING710 785 762*736 N240 MK-MRING745 838 813*780 N240 MK-MRING810 886 864*838 N240, N240S MK-MRING860 935 914*884 N240S MK-MRING910 980 965*935 N240S MK-MRING960 1038 1016*986 N240S, M330 MK-MRING1010 1090 1067*1041 M330 Order Guide: Casing Tube OD & ID + Reamer Bit Diameter + Minimal Casing Shoe ID + Hammer Shank Style Our Service 1.Pre-sale service: If demand, assist clients to get rich and generous returns on their investments.Select DTH tools model.Design and manufacture down the hole products according to client's requirement. 2.Services during the sale: Assist clients to draft solving plans. Pre-check and accept Rock drill products ahead of delivery . 3.After-sale services: Our sales team will response for your question within 24 hours (Holidays Excluded) Technical Support will be available in any time. Free replacement can be provided once the failure confirmed caused by our product quality.  

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WUHAN KINGDRILLING DIAMOND CO., LTD.

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