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 the standard. The values given in parentheses are for information only.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ANSIB31.1 Power Piping Code
SectionIX, Welding and Brazing Qualifications
expansion joint; metallic bellows-type expansion joints; piping systems; piping thermal contraction; piping thermal expansion; Single expansion joint; Swing expansion joint; Universal expansion joint; Bellows type expansion joints; Circular expansion joints; Double expansion joint; Expansion joints; Gimball expansion joint; Hinged expansion joint; Metallic bellows expansion joints; Piping systems--maritime (shipboard); Pressure balanced expansion joint; Shipbuilding materials (general)--specifications; Shipbuilding piping materials--specifications; Shipbuilding steel materials--specifications; Shipbuilding steel pipe materials--specifications;
ICS Number Code 23.040.60 (Flanges, couplings and joints)
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