1.1 This specification covers a group of requirements that, unless otherwise specified in an individual specification, shall apply to the ASTM product specifications noted below. Title of Specification ASTM DesignationA     Seamless Carbon-Molybdenum Alloy-Steel Boiler and  Superheater Tubes A209/A209M Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater,  and Heat-Exchanger Tubes A213/A213M Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger,  and Condenser Tubes A249/A249M Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and  Superheater Tubes A250/A250M Seamless and Welded Ferritic and Martensitic Stainless Steel  Tubing for General Service A268/A268M Seamless and Welded Austenitic Stainless Steel Tubing for  General Service A269/A269M Seamless and Welded Austenitic Stainless Steel Sanitary  Tubing A270/A270M Seamless and Welded Carbon and Alloy-Steel Tubes for  Low-Temperature Service A334/A334M Welded Austenitic Stainless Steel Feedwater Heater Tubes A688/A688M Austenitic Stainless Steel Tubing for Breeder Reactor Core  Components A771/A771M Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing  for General Service A789/A789M Welded Ferritic Stainless Steel Feedwater Heater Tubes A803/A803M Austenitic and Ferritic Stainless Steel Duct Tubes for Breeder  Reactor Core Components A826/A826M High-Frequency Induction Welded, Unannealed Austenitic Steel  Condenser Tubes A851(A) These designations refer to the latest issue of the respective specifications. 1.2 In the case of conflict between a requirement of a product specification and a requirement of this general requirements specification, the product specification shall prevail. In the case of conflict between a requirement of the product specification or a requirement of this general requirements specification and a more st