ASTM F1120-87(2019)

Standard Specification for Circular Metallic Bellows Type Expansion Joints for Piping Applications

ABSTRACT
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.
SCOPE
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.  
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.

General Information

• Status: Published
• Publication Date: 30-Nov-2019
• ICS: 23.040.60 - Flanges, couplings and joints
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.11 - Machinery and Piping Systems

Relations

• Replaces: ASTM F1120-87(2015) - Standard Specification for Circular Metallic Bellows Type Expansion Joints for Piping Applications
• Effective Date: 01-Dec-2019

Standards Content (Sample)

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.
Designation:F1120 −87 (Reapproved 2019) An American National Standard
Standard Specification for
Circular Metallic Bellows Type Expansion Joints for Piping
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Applications
This standard is issued under the fixed designation F1120; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope ASMEBoilerandPressureVesselCode,SectionIX Welding
and Brazing Qualifications
1.1 This specification establishes the minimum require-
B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 through
ments for the mechanical design, manufacture, inspection, and
NPS 24 Metric/Inch Standard
testing of circular metallic bellows-type expansion joints used
B16.25 Buttwelding Ends
to absorb the dimensional changes resulting from piping
B31.1 Power Piping
thermal expansion or contraction, as well as the movement of
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2.2 EJMA Standard:
terminal equipment and supporting structures.
Standards of the Expansion Joint Manufacturer’s Associa-
1.2 Additional or better features, over and above the mini-
tion
mum requirements set by this specification, are not prohibited
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2.3 PFI Standard:
by this specification.
ES-3 Fabrication Tolerances
1.3 The layout of many piping systems provides inherent
flexibility through natural changes in direction so that any
3. Terminology
displacements produce primarily bending or torsional strains,
3.1 Expansion joint definitions shall be in accordance with
within acceptable limits. Where the system lacks this inherent
those in the EJMA Standards.
flexibility the designer should then consider adding flexibility
3.2 Definitions:
through the use of metallic bellows-type expansion joints.
3.2.1 double expansion joint, n—expansion joint consisting
1.4 The values stated in inch-pound units are to be regarded
of two bellows joined by a common connector.
as standard. The values given in parentheses are mathematical
3.2.1.1 Discussion—The common connector is anchored to
conversions to SI units that are provided for information only
some rigid part of the installation by means of an anchor base.
and are not considered standard.
The anchor base may be attached to the common connector
1.5 This international standard was developed in accor-
either at installation or at time of manufacture. Each bellows
dance with internationally recognized principles on standard-
acts as a single expansion joint and absorbs the movement of
ization established in the Decision on Principles for the
the pipe section in which it is installed independently of the
Development of International Standards, Guides and Recom-
other bellows.
mendations issued by the World Trade Organization Technical
3.2.2 gimbal expansion joint, n—expansion joint designed
Barriers to Trade (TBT) Committee.
to permit angular rotation in any plane by the use of two pairs
of hinges affixed to a common floating gimbal ring.
2. Referenced Documents
3.2.2.1 Discussion—The gimbal ring, hinges, and pins are
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designed to restrain the thrust of the expansion joint as a result
2.1 ASME Standards:
of internal pressure and extraneous forces, where applicable.
ASME Boiler and Pressure Vessel Code, Section VIII,
Division 1 Pressure Vessels 3.2.3 hinged expansion joint, n—expansion joint containing
one bellow designed to permit angular rotation in one plane
only by the use of a pair of pins through hinge plates attached
to the expansion joint ends.
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This specification is under the jurisdiction of ASTM Committee F25 on Ships
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
Machinery and Piping Systems.
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Current edition approved Dec. 1, 2019. Published January 2020. Originally Available from Expansion Joint Manufacturer’s Association, Inc (EJMA), 25
approved in 1987. Last previous edition approved in 2015 as F1120 – 87 (2015). N. Broadway, Tarrytown, NY 10591, http://www.ejma.org. The standards of the
DOI: 10.1520/F1120-87R19. Expansion Joint Manufacturer’sAssociation are a collection of standards developed
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Available from American Society of Mechanical Engineers (ASME), ASME by this industry and published in one volume, herein called EJMA Standards.
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International Headquarters, Two Park Ave., New York, NY 10016-5990, http:// Available from Pipe Fabrication Institute (PFI), 511 Avenue of the Americas,
www.asme.org. Suite 601, New York, NY 10011, http://www.pfi-institute.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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