... exact information about stainless steel flanges as fellows :Certification: ISO9001.Standard: AISI,ANSI,ASTM,DIN,GB,JIS,EN,Etc.Size: 1 ... As Your Requirements.Model Number: ANSI B16.5Standard Or Nonstandard: Standard.Type: PL, SO, WN ,SW.Connection: Raised Face, Flat Face, Ring ... Type Joint, Lap-Joint Face, Large Male-Female, Small Male-Female, ...