Ibikoresho byo mu miyoboro bikozwe hakurikijwe ASME B16.11, MSS-SP-79 \ 83 \ 95 \ 97, na BS3799.Ibikoresho byahimbwe bikoreshwa mukubaka ihuza, hagati ya nomero ya bore ingengabihe n'umuyoboro.Zitangwa muburyo bunini bwo gusaba, nka chimique, peteroli, ingufu za generatio ...
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