12 1/4" (311.1mm) IADC537gtricone Bits Factory Selling Directly for Well Drilling, HDD Trenchless, Foundation

12 1/4 537 tricone TCI drill bitBasical SpecificationBit Size12 1/4'',311.1mmIADC Code: 537GThread Connection7 5/8 API REG PINSeriesHR series rubber sealed bearingNozzle Qty3NZWeight105KGOperating ParametersWOB(kN/mm)0.45-1.0RPM(r/min)120-50FormationsSoft to medium formationBit SizeBit Typeinmm31/288.9HR537HR637        45/8 117.5HR117HR115HR537HR637HR737     43/4120.7HR117HR115HR537HR637HR737     57/8149.2HR217HR537HR547HR637      6152.4HR117HR217HR237HR517HR547HR637HR737   61/4158.8HR127HR237HR517HR527HR547HR637HR737HR837  61/2165.1HR127HR217HR517HR537HR547HR637HR737HR837  63/4171.5HR117HR447HR537HR547HR617HR627HR637HR737HR837 71/2190.5HR127HR217HR517HR517HR527HR527HR617   77/8200HR177HR437HR517HR527HR537HR547HR547HR617HR627HR63783/8212.7HR217HR527HR537HR617HR627HR637HR737HR837HR617HR62781/2215.9HR117HR127HR137HR217HR247HR437HR447HR517HR527HR537HE547HR617HR627HR637HR737HR837    83/4222.3HE116HR437HR517HR537HR627     91/2241.3HR117HR127HR417HR437HR517HR527HR537HR547HR617 95/8244.5HR117HR127HR137HR217HR437HR517HR527   97/8250.8HR117HR127HR137HR217HR417HR437HR517HR527  105/8269.9HR127HR217HR437HR517HR547     115/8295.3HR117HR127HR137HR217HR147HR517HR537HR547  121/4311.2HR117HR127HR137HR417HR437HR517HR527HR537  HR547HR617HR627HR637      135/8346.1HR117HR127HR235HR437HR517HR527HR537HR637  133/4349.3HR437HR517HR537HR617HR627HR637HR737HR117HR217 143/4374.7HR117HR127HR137HR517HR527HR537HR547HR617HR637 151/2393.7HR127HR217HR517HR527HR537HR547HR617HR637HR737HR83716406.4HR117HR127HR127HR517HR527HR537HR547HR617HR637HR737171/2444.5HR117HR127HR137HR437HR517HR527HR537HR547HR637HR73718457.2HR117HR217HR237HR437HR517HR527HR537HR547HR637HR73719482.6HR117HR217HR237HR437HR517HR527HR537HR547HR637HR73720508.0HR117HR217HR237HR437HR517HR527HR537HR547HR637HR73722558.8HR117HR217HR237HR437HR517HR527HR537HR547HR637HR73724609.6HR117HR217HR237HR437HR517HR527HR537HR547HR637HR73726914.4HR117HR217HR237HR437HR517HR527HR537HR547HR637HR737  IADCWOBRPMApplicable Formations(KN/MM)(r/min)(Bit Dia)116  1170.35~0.8150~80Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk etc.136  1370.35~1.0120~60Soft to mesium soft formations with low compressive strength and high drillability.such as medium soft shale,hard gypsum,medium soft limestone.medium soft sandstone soft formation with harder nterbeds,ect.216  2170.4~1.0100~60Medium hard formations with high compressive strength,such as medium soft shale,hard gypsum,medium soft limestone,medium soft sandstone,soft formation with harder interbeds ect.246  2470.4~1.080~50Medium hard formations with high compressive strength,such as abrasive shale.limestone,sandstone,dolomite,hard gypsum,marble,ect.417  4370.35~0.9150~70Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk,gypsum,salt,soft shale,soft limestone,etc.447517  5270.35~1.0140~60Soft formations with low compressive strength and high drillability,such as mudstore,gypsum,salt,soft shale.soft limestone,ect.537  5470.45~1.0120~50Soft to medium formations with low compressive strength,such as medium soft shale,medium soft limestone,medium soft sandstone,medium formation with harder and abrasiver interbeds,ect.617  6270.45~1.190~50Medium hard formations with high compressive strength,such as hard shale,limestone,sandstone,dolomite,ect.6370.5~1.280~40Hard formations with high compressive strength,such as sandstone,limestone,dolomite,hard gypsum,marble,ect.Company Information  Hejian Hengji Bit Manufacture Co.,LTD  is specialized in manufacturing high quality rock bit since 2001,especially for tricone bit,PDC bit,hole opener,single cone bit and drag bit.With advanced CNC machines and R&D team and on-time delivery. we have kept our clients ahead of schedule and under budget by providing the highest quality tools at the best possible prices .    We ship to more than 40 different countries and serve industries such as Oil & Gas, water well , Construction,Mining,  Horizontal Directional Drilling (HDD), Geothermal and Environmental. Our experienced staff is here to assist you with everything from choosing the right bit to shipping around the globe.     Our goal is to provide our customers with the best quality tools, accessories and service in the industry. We are supported by many years of experience, trained professionals and a full machine shop.  Reduce the cost ,Speed the drilling ,Guarantee the safety is always our aim.  We have been always insist on"Hengji bit,focusing on quality".   Main productstricone bit(mill tooth and tungsten carbide insert tricone bit)PDC bit(matrix body and steel body PDC bit)hole opener(HDD rock reamer,barrel reamer,etc)drag bit(step drag bit,PDC drag bit,chevron drag bit,etc)accessories(single cone,bit breaker,nozzle ,etc)      HENGJI Advantages--The first-class engineers of tricone bits and PDC bits--Advanced technology and Equipment, International standard.--R&D center for rock drilling tools, high precision CNC machines, SGS&ISO Cert