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  1. kushnir22

    definition of fine grain steel

    hi. can anybody tell what is the official definition of fine grain steel? are API 5L X-52, 60, 65, 70 classified as fine grain steels?
  2. kushnir22

    classification of steel according to en 15608

    how will you classify API 5L X65 according to en 15608? group 1.3 or group 2.1?? any help will be appreciated.
  3. kushnir22

    valve ratings in bs en 12266

    That is exactly what I am looking for, ballsellman, when you say that resilient seated ball valves leakage should be zero, you put the valves under RATE A. where is it written? which valves should be under RATE B? C?, D?.... David.
  4. kushnir22

    valve ratings in bs en 12266

    hi Does anybody knows what are the valves rates (A-G) in table A.5 in bs en 12266 refer to? I am trying to create an acceptance criteria for resilient seated ball valves leakage rates in natural gas PRMS's and dont know which rate to choose. thanks, david

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