... ASME SA213/A213: Standard Specification for Seamless Ferritic and Austenitic Alloy- Steel Boiler, Superheater Stainless Steel U-Formed Tubes:01) Commodity name: Austenitic Stainless Steel U- ... case.For Heat Exchanger & Boiler Application:ASTM A249(TP304,TP304L,TP316L,TP321/H)ASTM A213(TP304,TP304L,TP304H,TP310S,TP316L ... ,TP321/H,TP347/H,2205, 31750, 904L )ASTM A213(T1,T12,T22,T23,T24,T91)ASTM A106/A 53 ...