... Alloys : Copper, Brass & GunmetalSize : 1/8" NB TO 48"NB.Class : 150#, 300#,400 #,600#,900#, 1500# & 2500 #.StandardANSI : ANSI B16 ... .5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16. ... : BS4504 , BS4504, BS1560, BS10 304/304L & 3016/316L ANSI B16.5 Flange