There are different types of flanges and Shasan Piping Solution is a leading supplier of all types of flanges in this specification. ASTM A694 F65 blind flanges are used to terminate pipe connections. A694 specification flanges, fittings, valves, and other components are intended for high pressure transmission service. Therefore, ASTM A694 F70 Carbon Steel ASTM flanges are used in pet... https://www.shasanpiping.com/carbon-steel-a-694-flanges-manufacturers-exporters-suppliers-stockists.html