There are several types of stainless steel pipe flanges in the PVF Industry. Trying to understand which one for a given application can be daunting. Merit Brass' Inside Sales Manager, Dave Adamson gives insight into the various types offered at Merit Brass in stainless steel Type 304/L and Type 316/L both ANSI Raised face and MSS flat faced both:
Merit's stainless steel ANSI flanges are available in 1/2" - 12". They are also available in class 150 and class 300. The MSS flanges are available in 1/2" - 10" in class 150. Merit does carry plate flanges: