1、 Reference numberISO 15348:2002(E)ISO 2002INTERNATIONAL STANDARD ISO15348First edition2002-04-01Pipework Metal bellows expansion joints General Tuyauteries Compensateurs mtalliques soufflet Gnralits Copyright International Organization for Standardization Provided by IHS under license with ISONot fo
2、r ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 15348:2002(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded a
3、re licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Detai
4、ls of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem re
5、lating to it is found, please inform the Central Secretariat at the address given below. ISO 2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, wi
6、thout permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2002 All right
7、s reserved Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 15348:2002(E) ISO 2002 All rights reserved iiiContents Page Foreword.iv Introduction.v 1 Scope 1 2 Normativ
8、e references1 3 Terms and definitions .2 4 Types of expansion joint.4 5 Information to be supplied by the purchaser .4 6 Materials .6 7 Dimensions and tolerances6 8 Design.7 9 Manufacture .7 10 Inspection and testing.7 11 Type tests .8 12 Marking .9 Annex A (normative) Technical-data sheet 10 Annex
9、B (normative) Materials and temperature derating factors.12 Annex C (normative) European materials and temperature derating factors.13 Annex D (normative) European end fittings.14 Annex E (normative) Nominal sizes (DN) .15 Annex F (normative) Nominal pressures (PN) .16 Annex G (normative) European n
10、ominal pressures (PN) .17 Bibliography18 Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 15348:2002(E) iv ISO 2002 All rights reserved Foreword ISO (the International
11、 Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been est
12、ablished has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardiz
13、ation. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voti
14、ng. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying a
15、ny or all such patent rights. ISO 15348 was prepared by Technical Committee ISO/TC 5, Ferrous metal pipes and metallic fittings, Subcommittee SC 11, Flexible metallic hoses and expansion joints. Annexes A to G form a normative part of this International Standard. Copyright International Organization
16、 for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 15348:2002(E) ISO 2002 All rights reserved vIntroduction This document is a base standard for metal bellows expansion joints. Users of this International
17、Standard are advised to consider the desirability of third-party certification of product conformity with this International Standard, based on testing and continuous product surveillance, which may be coupled with the assessment of suppliers quality systems against ISO 9001. Copyright International
18、 Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permit
19、ted without license from IHS-,-,-INTERNATIONAL STANDARD ISO 15348:2002(E) ISO 2002 All rights reserved 1Pipework Metal bellows expansion joints General 1 Scope This International Standard specifies the terminology and the general rules for the design, manufacture, control and type testing of metal e
20、xpansion joints incorporating corrugated bellows. It applies to metal expansion joints equipped with one or more corrugated bellows of circular cross-section. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of t
21、his International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative
22、 documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 7-1, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, to
23、lerances and designation ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation ISO 4200, Plain end steel tubes, welded and seamless General tables of dimensions and masses per unit length ISO 7005-1, Metallic flanges Part 1: St
24、eel flanges ISO 7268, Pipe components Definition of nominal pressure ISO 9328-5, Steel plates and strips for pressure purposes Technical delivery conditions Part 5: Austenitic steels EN 1092-1, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part
25、1: Steel flanges EN 1333, Pipework components Definition and selection of PN EN 10088-2, Stainless steels Part 2: Technical delivery conditions for sheet/plate and strip for general purposes ENV 10220, Seamless and welded steel tubes Dimensions and masses per unit length EN 10226-1, Pipe threads whe
26、re pressure-tight joints are made on the threads Part 1: Designation, dimensions and tolerances Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 15348:2002(E) 2 ISO 20
27、02 All rights reserved 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 expansion joint leakproof metal device consisting of one or more bellows used to absorb movements such as caused by thermal or mechanical effects in piping o
28、r components of equipment 3.2 corrugation GB convolution US single flexible element of the bellows 3.3 corrugated bellows GB convoluted bellows US expansion element made from one or more plies, with one or more corrugations/convolutions and with or without end cuffs NOTE It can be reinforced with ri
29、ngs. 3.4 ply constituent element of the wall of the bellows NOTE The wall can be made from one or more plies. 3.5 cuff cylindrical section situated at one or both of the ends of the bellows to allow its attachment 3.6 cuff reinforcement collar ring placed around the cuff to reinforce it against the
30、effect of internal pressure and hence reduce deformation 3.7 root-reinforcing ring element fitted outside or inside a bellows in a corrugation/convolution root, conforming to the shape of the root, to prevent its deformation under internal or external pressure NOTE When placed between two corrugatio
31、n/convolutions, it is called an intermediate reinforcing ring. When placed at the end, it is called an end corrugation/convolution-reinforcing ring. 3.8 welding ring ring placed around the cuff to facilitate welding 3.9 internal sleeve element which allows a satisfactory flow of medium and protects
32、the bellows from erosion and flow-induced vibrations NOTE It is designed so that it does not restrict the movement of the expansion joint. 3.10 pressure thrust axial force arising from internal pressure which has to be contained to avoid undue axial deformation of the bellows Copyright International
33、 Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 15348:2002(E) ISO 2002 All rights reserved 33.11 end fittings fittings (usually weld ends, threaded ends or flanged ends) by means of which e
34、xpansion joints are connected to the piping system or to equipment 3.12 restraining components mechanical components (tie-bars, hinges, gimbal rings, etc.) designed to resist pressure thrust and external loads NOTE They are attached to end fittings with brackets, carrier flanges or reinforcing gusse
35、ts. 3.13 guide elements components used for maintaining coaxiality during movement 3.14 external shroud cover around the bellows, whose dimensions do not impede the movement of the expansion joint but provide limited protection of the bellows against mechanical shock and spatter 3.15 stroke indicato
36、r device that, in normal service, indicates the movement of the bellows NOTE If the design movement is exceeded, the device may distort permanently to indicate that an abnormal function of the system has occurred. 3.16 movement distributor device mounted on an expansion joint containing several bell
37、ows that limits each of them to work within their designed movements 3.17 adjusting device device to enable the bellows to be pre-set to given dimensions, or to meet special installation requirements 3.18 shipping bar device that secures the expansion joint in a position determined by the manufactur
38、er during the period of shipment, handling and installation 3.19 movements movements of an axial, angular or lateral nature 3.19.1 axial movement movement causing axial compression or extension of an expansion joint 3.19.2 angular movement movement causing bending of an expansion joint 3.19.3 latera
39、l movement transverse movement of the ends of an expansion joint such that their axes remain parallel Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 15348:2002(E) 4
40、ISO 2002 All rights reserved 3.20 spring rate force, axial, angular or lateral in nature, or moment necessary to produce a unit deflection of 1 mm or 1 degree of the expansion joint 3.21 cycle full movement, from an initial position to the given working position and back, under the working condition
41、s specified 4 Types of expansion joint 4.1 General There are four principal types of expansion joint, which are designated according to the movements absorbed (see 4.2 to 4.5 and Table 1). NOTE If information is required on further types, refer to the manufacturer. 4.2 Axial expansion joint Absorbs
42、mainly axial movement. When non-pressure-balanced, it does not restrain pressure thrust. When pressure-balanced, it restrains pressure thrust. 4.3 Angular expansion joint Absorbs angular movement. When fitted with hinges, it allows movement in a single plane. When fitted with gimbal rings, it allows
43、 movement in any plane. It restrains pressure thrust. Normally used in a set of two or three joints. 4.4 Lateral expansion joint Absorbs lateral movement. An angular movement is also permissible when the joint is fitted with two tie-bars, the movement being perpendicular to the plane containing the
44、tie rods. It restrains pressure thrust. 4.5 Universal expansion joint Absorbs several movements. It does not restrain pressure thrust unless it is pressure-balanced. 5 Information to be supplied by the purchaser The purchaser shall state, as a minimum, the following in all enquiries and orders: a) t
45、he expansion joint type (see Table 1); b) the nominal size (DN); c) the design pressure; d) the design temperature; e) the movements; f) the materials; g) the fittings. Dependent on the application, the relevant details listed in annex A shall also be given. Copyright International Organization for
46、Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 15348:2002(E) ISO 2002 All rights reserved 5Table 1 Types of expansion joint Movement Angular Lateral Type Design Pressurethrust restraint Axial Singleplane Mu
47、lti-plane Single plane Multi-plane Unrestrained No X (X) (X) (X) (X) Axial Balanced Yes X Hinged Yes X Angular Gimbals Yes X X Two tie-bars Yes X X X Lateral Three or more tie-bars Yes X X No X X X X X Unrestrained, with one or two bellows Universal Balanced Yes X X X X X = Applicable, (X) = Limited
48、 use Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 15348:2002(E) 6 ISO 2002 All rights reserved 6 Materials The selection of materials for use in an expansion joint shall take into consideration the information provided in clause 5 and annex A. When the purchaser specifies the materials, the manufacturer shall approve them. When selecting materials, they shall whenever possible conform to ISO standards. A list of suitable ISO materials is
