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Recent content by nacho1

  1. nacho1

    correlation between load rating and thread size on rotary swivel

    I've been trying to figure out what the correlation is between the rotary swivel stem connection size and the swivel's load rating. For example, why does a 500 ton swivel have 7-5/8 LH API Reg connection and the 750 ton swivel the 8-5/8? Can't the 750 ton have 7-5/8 connection? I've checked...

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