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Nominal diameter mm inch inch (inch), commonly known as our country6 "1/8" -"8 1/4" -10 "3/8" -15 1/2, 4 points20 3/4 "6"251 "1 inches."(32) 1 "+1/4" ----401 "+1/2" inch and a half502 "2 inches"Flange due to different nominal pressure, structural types and installation methods of different thickness and size of different, please refer to the "mechanical design manual", pipe fittings.
DN15 outside diameter 18, 22 DN20, outer diameter 25, 278 points, did not know has not heard
DN15 outside diameter 18, 22 DN20, outer diameter 25, 278 points, did not know has not heard
