ASTM B515-95 pdf free.Standard Specification for Welded UNS N08120, UNS N08800, UNS N08810, and UNS N08811 Alloy Tubes. This specification covers welded UNS NO8120，UNSN08800，UNS N08810 and UNS N08811 alloy boiler， heatexchanger, and condenser tubes for general corrosion...