ANSI b16.5 150 LBS screwed flange 1) material :stainless steel 2) standard :ANSI, ... ), Welding-Neck Flange (WN), Threaded Flange (TH), etc.American SeriesCLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500 ... 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400StandardHG20592, ASME16.5-2009, DIN2633 ... 600/900 stainless steel forged screwed flange ANSI b16.5 150 lbs screwed flange