Standard Specification for Carbon Steel Forgings for Piping Applications

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ASTM International

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Active

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Electronic (PDF)

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10 minutes

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1.1''This specification2 covers forged carbon steel piping components for ambient- and higher-temperature service in pressure systems. Included are flanges, fittings, valves, and similar parts ordered either to dimensions specified by the purchaser or to dimensional standards such as the MSS, ASME, and API specifications referenced in Section 2. Forgings made to this specification are limited to a maximum weight of 10'''000 lb [4540 kg]. Larger forgings may be ordered to Specification A266/A266M. Tubesheets and hollow cylindrical forgings for pressure vessel shells are not included within the scope of this specification. Although this specification covers some piping components machined from rolled bar and seamless tubular products (see 5.2), it does not cover raw material produced in these product forms.

1.2''Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only when specified individually by the purchaser in the order.

1.3''Specification A266/A266M covers other steel forgings and Specifications A675/A675M and A696 cover other steel bars.

1.4''This specification is expressed in both inch-pound units and SI units. However, unless the order specifies the applicable '''M''' specification designation (SI units), the material shall be furnished to inch-pound units. 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.

Note 1:''The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as '''nominal diameter,''' '''size,''' and '''nominal size.'''

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.

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Number of Pages :	5
Published :	01/01/2021
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