Abstract: Summarized are all the key amendments of ASME Specification 2002(Edition A02) as issued by Commission of Material for Boilers and Pressure Vessels of ASME, covering SA-213/SA-213M——Seamless Ferritic and Austenitic Alloyed Steel Tubes for Boiler, Overheater and Heat Exchanger and SA-335/SA-335M——Nominal Seamless Ferritic Alloyed Steel Tubes for High Temperature Service. Also made is the comparison of the above two new edition specifications with the previous Edifion01 Specifications of ASTM A213/A213M and A335/A335M for the purpose of any cross-reference during implementation of the new versions.