ISO INTERNATIONAL STANDARD 580 Third edition 2005-02-15 Plastics piping and ducting systems Injection-moulded thermoplastics fittings - Methods for visually assessing the effects of heating Systemes de canalisations et de gaines en plastiques - Raccords thermoplastiques moules par injection Méthodes d'essai pour estimervisuellementleseffetsdelachaleur Reference number ISO 580:2005(E) @ ISO 2005 ed by IHS ur Not for Resale ISO580:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details 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 relating to it is found, please inform the Central Secretariat at the address given below. ?ISO2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's memberbody in the country of the requester. ISO copyright office Case postale 56.CH-1211Geneva 20 Tel. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland CopyightInternatinal organization for Standardization @ ISo 2005 - All rights reserved vithout license from IHS Not for Resale ISO 580:2005(E) Foreword IsO (the International 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 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 standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. 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 voting. 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 document may be the subject of paten rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 580 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee Sc 5, General properties of pipes, fittings and valves of plastic materials and theiraccessoriesTestmethodsand basic specifications. Thisthirdeditioncancelsandreplacesthesecondedition(lSO580:199o),whichhasbeentechnicallyrevised ii ISO580:2005(E) Introduction The test for determination of the resistance to heat according to the two test methods specified in this International Standard is applicable for distinguishing between properly and improperly moulded thermoplastics pipe fittings. It can be used to determine whether cold slugs (pieces of material that enter the mould at a temperature significantly lower than the rest of the mass) or unfused areas are present, reveal cavities and porosity, determine the amount of moulded-in stress produced by the moulding process, reveal contamination, and show the integrity of the fusion line. residual stress and will generally be less reactive when exposed to chemicals. By placing moulded fittings in a is possible to detect internal stress. Since, the stresses start to be released as soon as the material passes to the rubbery state, it is only NOTE Injection-moulded fittings