... 4.Type :Flange Stainless steel flange Features:1) size: DN10-DN 1200,150#-2500#2) Grade : Grade : 301, 321, 304, 304L, 316, 316L, 317, 317L ... attention all the time. type stainless steel flange sizeDN10-DN 1200,150#-2500#grade321, 304, 304L, 316, 316L, 317, 317L,310s,904L etc.standardASTM ...