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  1. CDN2015

    Calculating make-up torque for manufactured buttress connection

    Desertfox, So sorry, about the lack of information to make a decision. Basically the crossover is from 9-5/8" to 7". It was made from 4145 steel bar stock. Internal 7" buttress box connection was machined so as to be able to make-up a 7" landing string inside it. The make-up torque I request is...
  2. CDN2015

    Calculating make-up torque for manufactured buttress connection

    Hi All, I would like to know how the make-up torque for a buttress connection is calculated. I know there are values in different books but I would like to calculate the required make-up torque as we have designed special crossovers from bar stocks which are of higher grade / tensile strength...

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