... Standard Specification for Seamless Ferritic and Austenitic Alloy- Steel Boiler, Superheater Stainless Steel U-Formed Tubes:01) Commodity name: ... : Widely used to manufacture outdoor equipment building materials, heat resistant parts, and parts that are difficult to make ... bundles, then protected by seaworthy wooden case.For Heat Exchanger & Boiler Application:ASTM A249(TP304,TP304L,TP316L,TP321/H)ASTM ...