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1.1 This specification covers a group of requirements which, with the exceptions of 4.3 and Sections 5, 6, 17, 18, 19, 20, 21, 22, and 23, are mandatory requirements to the following ASTM tubular product specifications:

Title of SpecificationASTM DesignationElectric-Resistance-Welded Carbon Steel and Carbon Manganese Steel Boiler TubesA 178/A 178M Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser TubesA 179/A 179MSeamless Carbon Steel Boiler Tubes for High-Pressure ServiceA 192/A 192M Seamless Medium-Carbon Steel Boiler and Superheater Tubes A 210/A 210M Electric-Resistance-Welded Carbon Steel Heat-Exchanger and Condenser TubesA 214/A 214M Seamless and Electric-Welded Low-Alloy Steel Tubes A 423/A 423MElectric-Resistance-Welded Coiled Steel Tubing for Gasand Fuel Oil Lines A 539 Seamless Cold-Drawn Carbon Steel Feedwater Heater TubesA 556/A 556MSeamless, Cold-Drawn Carbon Steel Tubing for Hydraulic System ServiceA 822 These designations refer to the latest issue of the respective specifications.

1.2 One or more of Sections 4.3, 5, 6, 17, 18, 19, 20, 20.1, 22, and 23 apply when the product specification or purchase order has a requirement for the test or analysis described by these sections.

1.3 In case of conflict between a requirement of the product specification and a requirement of this general requirement specification only the requirement of the product specification need be satisfied.

1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "M" designation (SI) of the product specification is specified in the order.