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This specification establishes the minimum requirements for the mechanical design, manufacture, inspection, and testing of circular metallic bellows-type expansion joints used to absorb the dimensional changes resulting from piping thermal expansion or contraction, as well as the movement of terminal equipment and supporting structures. Materials used shall be free from defects that would adversely affect the performance of the expansion joint. All pressure retaining components shall be hydrostatically tested to meet the requirements prescribed.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification establishes the minimum requirements for the mechanical design, manufacture, inspection, and testing of circular metallic bellows-type expansion joints used to absorb the dimensional changes resulting from piping thermal expansion or contraction, as well as the movement of terminal equipment and supporting structures.
1.2 Additional or better features, over and above the minimum requirements set by this specification, are not prohibited by this specification.
1.3 The layout of many piping systems provides inherent flexibility through natural changes in direction so that any displacements produce primarily bending or torsional strains, within acceptable limits. Where the system lacks this inherent flexibility the designer should then consider adding flexibility through the use of metallic bellows-type expansion joints.
1.4 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ANSI StandardsANSI B16.5 Pipe Flanges and Flanged Fittings ANSI B31.1 Power Piping Code B16.25 Butt Welding Ends
ASME StandardsSection IX Welding and Brazing Qualifications Section VIII, Division 1 Pressure Vessels
EJMA StandardStandards of the Expansion Joint Manufacturer&rsqu
PFI StandardES-3 Fabrication Tolerances
ICS Number Code 23.040.60 (Flanges, couplings and joints)
UNSPSC Code 40172900(Pipe expansion joints)
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ASTM F1120-87(2015), Standard Specification for Circular Metallic Bellows Type Expansion Joints for Piping Applications, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top