1、 DEUTSCHE NORMMay 2006DIN EN ISO 1167-2 ICS 23.040.20 Together with DIN EN ISO 1167-1:2006-05, supersedes DIN EN 921:1995-01 Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 2: Preparation of pipe test pieces (ISO 11
2、67-2:2006) English version of DIN EN ISO 1167-2:2006-05 Rohre, Formstcke und Bauteilkombinationen aus thermoplastischen Kunststoffen fr den Transport von Flssigkeiten Bestimmung der Widerstandsfhigkeit gegen inneren berdruck Teil 2: Vorbereitung der Rohr-Probekrper (ISO 1167-2:2006) Englische Fassun
3、g DIN EN ISO 1167-2:2006-05 Document comprises 9 pages No part of this standard may be reproduced without prior permission of DIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, has the exclusive right of sale for German Standards (DIN-Normen). English price gr
4、oup 7 www.din.de www.beuth.de !,nwy“11.06 9758486DIN EN ISO 1167-2:2006-05 2 National foreword This standard has been published in accordance with a decision taken by CEN/TC 155 to adopt, without alteration, International Standard ISO 1167-2 as a European Standard. The responsible German body involv
5、ed in its preparation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Technical Committee NA 054-05-02 AA Prfverfahren fr Rohre. The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows: ISO 1167-1 DIN EN ISO 1167-1 ISO 3126
6、DIN EN ISO 3126 Amendments This standard differs from DIN EN 921, January 1995 edition, as follows: a) The standard has been editorially revised and divided into four parts. b) Specifications relating to testing are now given in two separate standards. c) Part 2 specifies the preparation of test pie
7、ces. d) Since ISO 1167 has been adopted in its entirety, the title of the standard has been modified. Previous editions DIN EN 921: 1995-01 National Annex NA (informative) Bibliography DIN EN ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the
8、resistance to internal pressure Part 1: General method (ISO 1167-1:2006) DIN EN ISO 3126, Plastics piping systems Plastics components Determination of dimensions (ISO 3126:2005) EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1167-2 February 2006 ICS 23.040.45; 23.040.20 Supersedes EN 921:1
9、994 English Version Thermoplastics pipes, fittings and assemblies for the conveyance of fluids - Determination of the resistance to internal pressure - Part 2: Preparation of pipe test pieces (ISO 1167-2:2006) Tubes, raccords et assemblages en matires thermoplastiques pour le transport des fluides -
10、 Dtermination de la rsistance la pression interne - Partie 2: Prparation des prouvettes tubulaires (ISO 1167-2:2006) Rohre, Formstcke und Bauteilkombinationen aus thermoplastischen Kunststoffen fr den Transport von Flssigkeiten - Bestimmung der Widerstandsfhigkeit gegen inneren berdruck - Teil 2: Vo
11、rbereitung der Rohr-Probekrper (ISO 1167-2:2006) This European Standard was approved by CEN on 23 January 2006. 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 alt
12、eration. Up-to-date lists and bibliographical references concerning such national standards may be obtained 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 tran
13、slation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,
14、Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management C
15、entre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1167-2:2006: EEN ISO 1167-2:2006 (E) 2 Foreword This document (EN ISO 1167-2:2006) has been prepared by Technical Committee ISO/TC
16、138 “Plastics pipes, fittings and valves for the transport of fluids“ in collaboration with Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems“, the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by public
17、ation of an identical text or by endorsement, at the latest by August 2006, and conflicting national standards shall be withdrawn at the latest by August 2006. This document supersedes EN 921:1994. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followi
18、ng countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
19、 Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 1167-2:2006 has been approved by CEN as EN ISO 1167-2:2006 without any modifications. EN ISO 1167-2:2006 (E) 3 Contents Page Foreword .2 Endorsement notice .2 1 Scope4 2 Normative references4 3 Principle .4 4 Apparatus.5 5 T
20、est pieces .5 6 Test report5 Bibliography7 EN ISO 1167-2:2006 (E) 4 1 Scope This part of ISO 1167 specifies the dimensions and method for preparation of extruded, or injection-moulded tubular, test pieces used to determine the resistance of thermoplastics pipes to internal hydrostatic pressure accor
21、ding to ISO 1167-1. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 11
22、67-1:2006, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General method ISO 3126, Plastics piping systems Plastics components Determination of dimensions 3 Principle Pipe test pieces may be obtained by extrusio
23、n or injection-moulding. The extruded test pieces are used for material and pipe testing, whereas the injection-moulded tubular test pieces are used for testing injection moulding materials only. The injection-moulded tubular test pieces make it possible to determine the time-related behaviour of th
24、e injection moulding material for fittings under hydrostatic pressure and under the same conditions as specified for extruded pipes. It is possible to extrapolate the results in accordance with a method such as that specified in ISO 9080 in order to determine the MRS (minimum required strength) and
25、to classify the material using ISO 12162. The tubular test pieces also make it possible to verify individual points on previously established stress/time regression curves as a minimum material test requirement. NOTE If the compound used for the injection-moulding of components can also be extruded,
26、 then its time-related behaviour can be investigated using either injection-moulded or extruded tubular test pieces. After conditioning, test pieces consisting of a portion of pipe sufficient to provide the required free length as a function of the diameter of the pipe are subjected to a specified i
27、nternal hydrostatic pressure or stress for a specified period of time or until the test piece(s) fail(s), in accordance with ISO 1167-1. The number of test pieces, conditioning and details of the test report are given in ISO 1167-1. EN ISO 1167-2:2006 (E) 5 4 Apparatus 4.1 End caps, as specified in
28、the standard making reference to ISO 1167-1. 4.2 Means of measuring the wall thickness, conforming to ISO 3126. 4.3 Means of measuring the mean outside diameter of the pipe, conforming to ISO 3126, e.g. Pi-tape. 5 Test pieces 5.1 Extruded test pieces 5.1.1 Free length The free length, l0, of the pip
29、e between the end caps shall be at least three times the nominal outside diameter dn, with a minimum of 250 mm. If, for pipes with dngreater than 315 mm, the specified minimum free length cannot be achieved, a shorter free length may be chosen with a minimum of two times dn, unless otherwise specifi
30、ed in the referring standard or specification. 5.1.2 Total length For type B end caps (see ISO 1167-1:2006, 5.1), the total length of the test piece shall be such that movement of the test piece between the end caps is accommodated during the test, thus making allowance for thermal expansion. 5.2 In
31、jection-moulded tubular test pieces Injection-moulded test pieces shall conform to the following requirements for the dimensions shown in Figure 1. The nominal outside diameter dnof the test pieces shall be between 25 mm and 110 mm inclusive. The wall thickness will depend on the material concerned.
32、 The free length l0of the test pieces, excluding the ends, shall be 3dn, except for test pieces dn 50 mm, for which the minimum free length shall be 140 mm. Injection-moulded test pieces with a longitudinal fusion line and both ends open should preferably be used for comparative and investigative pu
33、rposes only. The injection-moulding parameters can strongly influence the stresses in the injection-moulded test piece. 5.3 Measurement of dimensions If necessary for the calculation of the test pressure (see ISO 1167-1:2006, 7.2), find and determine, in accordance with ISO 3126, the minimum wall th
34、ickness and the mean outside diameter of the free length of the test piece, using apparatus conforming to 4.2 and 4.3. These measurements shall be used for further calculations. The rounding up procedure of ISO 3126 shall not be applied. 6 Test report Record the information required in order to comp
35、ly with ISO 1167-1:2006, Clause 11 and include the method of manufacture of the test piece, i.e. by extrusion or by injection moulding. EN ISO 1167-2:2006 (E) 6 Figure 1 Injection-moulded test pieces EN ISO 1167-2:2006 (E) 7 Bibliography 1 ISO 9080, Plastics piping and ducting systems Determination of the long-term hydrostatic strength of thermoplastics pipe materials in pipe form by extrapolation 2 ISO 12162, Thermoplastics materials for pipes and fittings for pressure applications Classification and designation Overall service (design) coefficient
