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Drill appearance inspection and record Check the apparent quality of the roller cone bit,threaded connection thread is intact,Tungstan carbide roller cone bit whether the mutual bite or Kuang move,the weld is intact; with a bit gauge cone roller bit diameter. 8 1/2 TCI tricone bit are designed for soft to very hard formations depending on the style and quantity of the carbides on the drill bit because of its versatility and performance, it's still one of the main tricone rock bits in use today. it is widely used for oil & gas, water well, geotechnical, environmental, geothermal, construction, exploration and mining drilling. 1.Product specifications: 1. soft formations(417, 437, 517, 537) features large chisel-shaped inserts to provide the highest penetration rate in the softest formations such as shales, clays, limestone and sands. 2. soft to medium formations(617, 637) designed to drill effectively in formations such as hard limestone, dolomite, hard sands, and other formations with hard cherty. 3. medium to hard formations(737) for extremely hard formations such as chert, granite, flint, and taconite. features short, closely spaced inserts to ensure maximum penetration rate and wear resistance. Model  Milled tooth bits tricone for water well , TCI bits tricone for water well IADC Code 116 117 126 127 136 137 216 217 226 316 317 326 327 336 337 115 125 135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347 417 427 437 517 527 537 617 627 637 737 837 832 415 425 435 445 525 625 635 416 427 436 446 447 516 526 537 547 516 536 535 Bearing Type H---Friction bearing; G---Roller bearing; F--- Floating Bearing Sealing Type HJ(metal sealed journal bearing) HA (rubber sealed journal bearing) air cooled bearing type Size From 2 7/8" to 26" larger sizes for hole opener bit ,reamer bit Material alloy steel, tungsten carbide insert Extra Feature 1) Y-Conical teeth 2) X-chisel teeth 3) K- wide teeth 4) G- Gague protection Applicable Formation Very soft, soft , medium soft ,hard, medium hard, very hard formation Application  Petroleum & gas ,water well ,mining and tectonic industries ,oil field, construction, geothermal, directional boring, and underground foundation work Package Seaworthy packing wooden case or as your requirement Payment Term T/T, L/C at sight Lead Time 3-7 work days Delivery Way By sea or by air 2. Tricone rock bit Product photos: well drilling bits Application 3.Packaging & Delivery(by air, by sea) 4.about us   Hejian Deris Drilling Equipment Co.,Ltd.professional manufacturer engaged in the research,development, production, sale and service of tricone bits, PDC bits, core bits, drag bits, hole openers. and we also procuce the drill bit equipment part,such as bit broker,centralizer, bit port, pdccutter.Apart from the fact that our products selling  well in almost all cities and provinces around China, our products also have enjoyed great popularity in world market, such countries and regions as USA, Europe, the Middle East. Whether selecting a current product from our catalog or seeking assistance for your application, you are welcomed to talk to our customer service center about your sourcing requirements. We would like to establish direct business relations with you on the basis of equality and mutual benefit. We are sincerely waiting your kindly and prompt enquiry.   5. Contact Me   PLs add the information in your inquiry.   1) the size of the tricone bit   2) the IADC tooth model, like 537G   3) PLs tell the drilling information of the layer.   4) PLs tell the quantity. http://www.welldrillingbit.com

Tags: 8.5 API TCI Bit,TCI Tricone Bits,Bit for Hard Well