• Model NO.：71,2"(190.5mm)
• Thread API：3 1,2"
• Use：Well Drilling
• Type：Drill Bit,Rock Drilling,Doloto,Sonja,Brocas
• Color：Blue.Red.Green or Customized
• Market：Global
• Delivery Time：Within 3 Woriking Days
• Transport Package：Fumigation-Free Wooden Box
• Specification：IADC115,117,127,227,315.
• Trademark：Siruite
• Origin：Urumqi
• Production Capacity：500 for Month

ModelMilled tooth bits tricone for water well ,  TCI bits tricone for water wellIADC Code116 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 347417 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  535Bearing TypeH---Friction bearing; G---Roller bearing; F--- Floating BearingSealing TypeHJ(metal sealed journal bearing)   
HA (rubber sealed journal bearing)  air cooled bearing typeSizeFrom 2 7/8" to 26" larger sizes for hole opener bit ,reamer bitMaterialalloy steel, tungsten carbide insertExtra Feature1) Y-Conical teeth  2) X-chisel teeth 3) K- wide teeth 4) G- Gague protectionApplicable FormationVery soft, soft , medium soft ,hard, medium hard, very hard formationApplicationPetroleum & gas ,water well ,mining and tectonic industries ,oil field, construction, geothermal, directional boring, and underground foundation workPackageSeaworthy packing wooden case or as your requirementPayment TermT/T, L/C at sightLead Time3-7 work daysDelivery WayBy sea or by air