kelly

Our company may act according to the user the request to produce Kelly and hexagonal Kelly, the length usually is 12.19 meters, uses AISI 4145H alloy structural steel manufacturing, and carries on the quenching and tempering treatment in the full length scope. The technique of production and the technical standard are completely in accordance with API, after heat treatment, apart from surface inch under to sampling under the room temperature to test its Brinell hardness to be possible to achieve reaches 285-341, minimum Charpy impact value is 54J. Square kellys sizesSpecifi cationsmm inDriven part of the lengthFullDriven partThe top female connectorLower external thread connectorODdStandard LDSelected LDStandard LSelected LEdge Width DFLDiagonal wide DCDiagonal wide DCCRadius RCRadius RCCEccentric hole minimum wall thickness tThread size and type of LODChamfer DiameterThread size and typeODDLRLengthLLChamfer Diameter DFStandardSelectedStandard DCSelected DULength LUStandard DFSelected DF63.5112801219063.583.382.557.941.311.43(6 5/8) REG(4 1/2) REG196.8146406.4186.1134.5NC26 (2 3/8IF)85.75088331.8(2 1/2)76.2112801219076.2100.0 98.439.549.211.43(6 5/8) REG(4 1/2) REG196.8146406.4186.1134.5NC31 (2 7/8IF)104.8508100.444.5(3)88.9112801219088.9115.1112.70 12.756.411.43(6 5/8) REG(4 1/2) REG196.8146406.4186.1134.5NC38 (3 1/2IF)120.7508116.357.2(3 1/2)10811280155401219016460108141.3139.70 12.769.912.06(6 5/8) REG(4 1/2) REG196.8146406.4186.1134.5NC46 (4IF)158.8508145.271.4(4 1/4)10811280155401219016460108141.3139.70 12.769.912.06(6 5/8) REG(4 1/2) REG196.8146406.4186.1134.5NC50 (4 1/2IF)161.950815471.4(4 1/4)133.411280155401219016460133.4175.4171.4515.985.715.88(6 5/8) REG196.8406.4186.1 (5 1/2FH)177.8508170.682.6(5 1/4)133.411280155401219016460133.4175.4171.4515.985.715.88(6 5/8) REG196.8406.4186.1NC56177.850817182.6(5 1/4)