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ASTM A450/A450M-23

Standard Specification for General Requirements for Carbon and Low Alloy Steel Tubes

1.1 This specification2 covers a group of requirements which, with the exceptions of 6.3 and Sections 7, 8, 19, 20, 21, 22, 23, 24, and 25, are mandatory requirements to the following ASTM tubular product specifications:3

Title of Specification

ASTM DesignationA


Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler Tubes


Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes


Seamless Carbon Steel Boiler Tubes for High-Pressure Service


Seamless Medium-Carbon Steel Boiler and Superheater Tubes


Electric-Resistance-Welded Carbon Steel Heat-Exchanger and Condenser Tubes


Seamless and Electric-Welded Low-Alloy Steel Tubes


Specification for Seamless and Welded Carbon Steel Heat-Exchanger Tubes with Integral Fins


Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes


Seamless, Cold-Drawn Carbon Steel Tubing for Hydraulic System Service


1.2 One or more of Sections 6.3, 7, 8, 19, 20, 21, 22, 22.1, 24, and 25 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 SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation (SI) of the product specification is specified in the order.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM International [astm]

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