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1.1 This specification covers three classes of gray iron for castings intended for use as valve pressure retaining parts, pipe fittings, and flanges.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Note 1—The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A48/A48M Specification for Gray Iron Castings
A644 Terminology Relating to Iron Castings
E8 Test Methods for Tension Testing of Metallic Materials
ICS Number Code 23.040.40 (Metal fittings); 23.040.60 (Flanges, couplings and joints)
UNSPSC Code 31100000(Castings and casting assemblies); 40170000(Pipe piping and pipe fittings)