F11 Class 2 flange
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ASTM A182 F11 Class 2 Weld Neck Flange
Forged weld neck flanges for elevated-temperature steam, power, petrochemical and refinery piping where the approved material specification calls for ASTM A182 F11 Class 2.Material: ASTM A182 F11 Class 2 chromium-molybdenum…