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  1. Edgar50

    Round bar acc to ASTM A182

    Some manufacturer's from round bar declares on the relating certificate that material is according to ASTM A182 (and also A276 / A479). In my opinion the Standard ASTM A182 is only applicable for Pipe Flanges, Forged Fittiings, Valves and Parts, not for round bar.(ASTM A182 - Scope - par 1.2) Am...
  2. Edgar50

    ASTM A182 supplem. requirement S6 hardness test

    Thank you all for your information and help!
  3. Edgar50

    ASTM A182 supplem. requirement S6 hardness test

    I have the following question, who can help me please? We have to supply forgings according to ASTM A182, complete certified including supplementary requirement S6, which is a hardness test. Quote: "S6.1 Each forging shall be hardness tested and shall meet the requirements of Table 3." Literal...
  4. Edgar50

    Maximum pipe pressure and actual pipe pressure

    Answer for "rconner"; unfortunately we do not know. We receive a list with all required piping components which we have to supply. There is no details such as design temperature, design pressure, actual location (under ground section or above level) etcetera. My calculations are based on...
  5. Edgar50

    Maximum pipe pressure and actual pipe pressure

    Thank you all for your replies. Maybe i was not clear enough in my explanation. We are a West-European supplier of branch outlets, forged fittings, special flanges, etc., not a manufacturer or piping engineers. The example i gave (a 10" STD weldolet attached to a 20" XS header pipe) is an...
  6. Edgar50

    Maximum pipe pressure and actual pipe pressure

    Many thanks for your reply racookpe1978! I have the following situation. Header pipe 20 inch schedule XS / ASTM A106 Gr B / temp. + 100 degr Celsius / corrosion allowance = 3 mm. According to the calculation of ASME B31.3, the maximum internal pressure for this size is 4,45 N/mm2 A weldolet...
  7. Edgar50

    Maximum pipe pressure and actual pipe pressure

    Question for the piping engineers; The maximum allowable internal pressure for pipelines can be calculated according to the ASME B31.3. But for how many percent is the actual internal pressure in practice? Reason for my question is that the stress calculations for branch outlets (weldolets)...

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