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  1. Bruce1983

    XT 38 - extreme torque thread machining

    Hi, Why is it not possible to machine XT38 (extreme torque) box thread with 4130 75ksi material and the recommended material is always 120 ksi minimum yield? This is for bop test stump insert used for bop testing application.
  2. Bruce1983

    BOP Test Stump Insert with XT-38 box thread material

    What material is suitable for a bop test stump insert with XT-38 box thread. Our supplier recommended 120 ksi yield material (4145 or 4330v)? Is 4130 75ksi material isn't suitable, if so please advise why it's not suitable? Is it difficult to machine XT threads with 75 ksi yield material...

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