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Class 150LW Corrosion Resistant Cast Flanges and Flanged Fittings

This Standard Practice establishes a series of cast austenitic stainless steel flanged fittings and austenitic stainless steel flanges of reduced weight with mating dimensions for assembly with ASME B16.5, Class 150 flanges, but identified as Class 150LW (Light Weight) and limited to use at reduced pressure-temperature ratings.


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October 27, 2021

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