These SO Flanges can be purchased from us in different tolerances suiting varied applications of clients. We are among the reliable names to get Premium SO Flanges at rates that will never burn a hole in the pockets. We customize these SO Flanges as per the specific demands of clients. Description : Standard : ASME, ANSI, JIS, DIN, GB, BS, etc. Size : 1/2� to 24"Pressure Class : 150#, 300#, 600#, 900# and 1500#Material : A105, A350LF2, F11�301�304, 304L, 316L, 321, 310S, F51�F53�F55, 601,625, 904L, etc.