ANSI b16.5 150 LBS screwed flange 1) material :stainless steel 2) standard : ... 600, CLASS 900, CLASS 1500, CLASS 2500European SeriesPN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63 ... , PN 100, PN 160, PN 250, PN 320, PN 400StandardHG20592, ASME16.5-2009 ... /300/600/900 stainless steel forged screwed flange ANSI b16.5 150 lbs screwed flange