BS EN 253-2003 区域供暖管道 直埋式热水供应网用预先绝热连接的管道系统.聚氨酯热绝缘和聚乙烯外覆层的钢管用组件.pdf

BRITISH STANDARD BS EN 2532003 Incorporating Amendment No. 1 District heating pipes Preinsulated bonded pipe systems for directly buried hot water networks Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene The European Standard EN 2532003, with the incorporation of amendment A12005, has the status of a British Standard ICS 23.040.99 BS EN 2532003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 27 February 2003 BSI 16 March 2006 ISBN 0 580 41319 5 National foreword This British Standard is the official English language version of EN 2532003 including amendment A12005. It supersedes BS EN 2531995 which is withdrawn. The start and finish of text introduced or altered by CEN amendment is indicated in the text by tags . Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by . The UK participation in its preparation was entrusted by Technical Committee RHE/9, Thermal insulating materials, to Subcommittee RHE/9/3, Insulation of underground pipelines, which has the responsibility to A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests ined; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 51 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 16014March 2006See national foreword EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 253 November 2005 ICS 23.040.99 Supersedes EN 2532003 A1 English version District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene Tuyaux de chauffage urbain - Systmes bloqus de tuyaux pr-isols pour les rseaux deau chaude enterrs directement - Tube de service en acier, isolation thermique en polyurthane et tube de protection en polythylne Fernwrmerohre - Werkmig gedmmte Verbundmantelrohrsysteme fr direkt erdverlegte Fernwrmenetze - Verbund-Rohrsystem bestehend aus Stahl-Mediumrohr, Polyurethan-Wrmedmmung und Auenmantel aus Polyethylen This European Standard was approved by CEN on 28 November 2002. Amendment A1 was approved by CEN on 7 October 2005. 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 obtained on application to the Management Centre 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 Management Centre 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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre rue de Stassart, 36 B-1050 Brussels 2003 CEN All rights of exploitation in any and by any means reserved worldwide for CEN national Members. Ref. No. EN 2532003 A1 2005 E February 2003 includes amendment A12005 inclut lamendement A12005 enthlt nderung A12005 EN 2532003 E 2 Contents page Foreword......................................................................................................................................................................5 Introduction.................................................................................................................................................................6 1Scope ..............................................................................................................................................................8 2Normative references ....................................................................................................................................8 3Terms and definitions....................................................................................................................................9 4Requirements...............................................................................................................................................10 4.1General..........................................................................................................................................................10 4.2Steel service pipe.........................................................................................................................................11 4.2.1Quality...........................................................................................................................................................11 4.2.2Diameter........................................................................................................................................................11 4.2.3Wall thickness..............................................................................................................................................11 4.2.4Surface condition.........................................................................................................................................13 4.3Casing...........................................................................................................................................................13 4.3.1Material properties.......................................................................................................................................13 4.3.2Casing properties ........................................................................................................................................14 4.4Polyurethane rigid foam insulation PUR.................................................................................................16 4.4.1Composition.................................................................................................................................................16 4.4.2Cell structure................................................................................................................................................17 4.4.3Foam density................................................................................................................................................17 4.4.4Compressive strength.................................................................................................................................17 4.4.5Water absorption at elevated temperature................................................................................................17 4.5Pipe assembly..............................................................................................................................................17 4.5.1Pipe ends......................................................................................................................................................17 4.5.2Increase in diameter of the casing pipe ....................................................................................................17 4.5.3Centre line deviation....................................................................................................................................18 4.5.4Expected thermal life and long term temperature resistance.................................................................19 4.5.5Thermal conductivity in unaged condition ...............................................................................................19 4.5.6Impact resistance.........................................................................................................................................19 4.5.7Creep behaviour...........................................................................................................................................19 4.5.8Surface conditions at delivery....................................................................................................................20 5Test s................................................................................................................................................20 5.1General..........................................................................................................................................................20 5.1.1Test specimens............................................................................................................................................20 5.2Casing...........................................................................................................................................................20 5.2.1Material density............................................................................................................................................20 5.2.2Dimensions...................................................................................................................................................20 5.2.3Appearance and surface finish...................................................................................................................21 5.2.4Heat reversion..............................................................................................................................................21 5.2.5Long-term mechanical properties..............................................................................................................21 5.2.6Constant load tensile test CLT.................................................................................................................21 5.2.7Elongation at break......................................................................................................................................21 5.2.8Carbon black dispersion, homogeneity ....................................................................................................22 5.2.9Notched constant load test.........................................................................................................................22 5.3Polyurethane rigid foam insulation PUR.................................................................................................23 5.3.1Composition.................................................................................................................................................23 5.3.2Cell structure................................................................................................................................................23 5.3.3Foam density................................................................................................................................................23 5.3.4Compressive strength.................................................................................................................................24 5.3.5Water absorption .........................................................................................................................................24 w w w . b z f x w . c o m EN 2532003 E 3 5.4Pipe assembly..............................................................................................................................................24 5.4.2Axial shear strength ....................................................................................................................................24 5.4.3Tangential shear strength...........................................................................................................................26 5.4.4Shear strength of the pipe assembly after ageing...................................................................................27 5.4.5Thermal conductivity...................................................................................................................................27 5.4.6Impact resistance.........................................................................................................................................28 5.4.7Creep behaviour at 140 C..........................................................................................................................28 6Marking..................................................................................