BS EN 1979-1999 Plastics piping and ducting systems D Thermoplastics spirally-formed structured-wall pipes D Determination of the tensile strength of a seam.pdf
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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1979:1999 BS 2782-1
2、1: Method 1110C:1999 The European Standard EN 1979:1999 has the status of a British Standard ICS 23.040.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Plastics piping and ducting systems Thermoplastics spirally-formed structured-wall pipes Determination of the tensile stre
3、ngth of a seam This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 June 1999 BSI 06-1999 ISBN 0 580 32500 8 BS EN 1979:1999 Amendments issued sinc
4、e publication Amd. No.DateComments National foreword This British Standard is the English language version of EN 1979:1999. The UK participation in its preparation was entrusted to Technical Committee PRI/61, Plastics piping systems and components, which has the responsibility to: aid enquirers to u
5、nderstand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented
6、 on this committee can be obtained on request to its secretary. This European Standard is also incorporated into BS 2782-11 Methods of testing plastics Part 11: Thermoplastics pipes, fittings and valves, as Method 1110C:1999, for association with related test methods for plastics materials and plast
7、ics piping systems. It may be used for the revision or amendment of other national standards, but it should not be presumed to apply to any existing standard or specification which contains or makes reference to a different test method until that standard/specification has been amended or revised to
8、 make reference to this method and adjust any requirements as appropriate. The responsible UK technical committee considers that certain aspects of the text as published could be misleading and require clarification or further attention as follows. a) Attention is drawn to the requirement given in 5
9、.1 that the test piece shall consist of the overall wall thickness (construction height) of the pipe from which it is taken. b) As shown in the plan view in Figure 1, the length of the test piece may include ribs or other features in the vicinity of the seam. In 5.2.2, in the third paragraph it is s
10、tated that individual ribs in the grip area may be removed if needed for a proper attachment of the grips. Figure 1 includes a section view in which no residual ribs are shown adjacent to the interlocking seam profiles. The UK technical committee considers that the requirements of 5.1 demand the ret
11、ention of the overall wall thickness in respect of at least any ribs or other structural features adjacent to the seam, since these may be designed to contribute to the stability of the seam. The committee considers that any removal of ribs to achieve attachment of the grips should be applied at the
12、 free ends of the test piece and should not remove the nearest of any such features to the seam. The section view shown in Figure 1 should therefore not be taken as indicating that all ribs or profile variations not integral with the interlocking seam profiles may or should be removed from the test
13、piece. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or using the Find facility of the BSI Standards Elect
14、ronic Catalogue. WARNING This British Standard, which is identical with EN 1979:1999, does not necessarily detail all the precautions necessary to meet the requirements of the Health and Safety at Work etc. Act 1974. Attention should be paid to any appropriate safety precautions and the method shoul
15、d be performed only by trained personnel. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.
16、 Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 5 and a back cover. CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1
17、999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1979:1999 E EUROPEAN STANDARDEN 1979 NORME EUROPE ENNE EUROPA ISCHE NORM January 1999 ICS 23.040.20 Descriptors: plastic tubes, thermoplastics resins, welded joints, tests, determ
18、ination, tensile strength, test specimen English version Plastics piping and ducting systems Thermoplastics spirally-formed structured-wall pipes Determination of the tensile strength of a seam Syste mes de canalisations et de gaines en matie res plastiques Tubes thermoplastiques a paroi structure e
19、 enroule s en he lice De termination de la re sistance en traction de la ligne de soudure Kunststoff-Rohrleitungs- und Schutzrohrsysteme Thermoplastische Spiralrohre mit profilierter Wandung Bestimmung der Zugfestigkeit einer Verbindungsnaht This European Standard was approved by CEN on 28 November
20、1998. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtaine
21、d on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secreta
22、riat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Page 2 E
23、N 1979:1999 BSI 06-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 155, Plastics piping systems and ducting systems, the Secretariat of which is held by NNI. This European Standard shall be given the status of a national standard, either by publication of an iden
24、tical text or by endorsement, at the latest by July 1999, and conflicting national standards shall be withdrawn at the latest by July 1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard
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