【正文】 owing terms and definitions apply. ductile iron cast iron used for pipes, fittings and accessories in which graphite is present substantially in spheroidal form adhesion force per unit area, applied perpendicular to the surface, which is necessary to separate the lining from its substrate indirect impact strength impact energy applied from outside of the pipe with deformation to which a lining can withstand without damage under defined test conditions 6 BS EN 15655:2020 EN 15655:2020 (E) hardness resistance of the lining to the peration of a ball under defined test conditions minimum lining thickness lower limit calculated for the polyurethane lining thickness by the mean value (x) minus two times the standard deviation (?) non porosity absence of holidays in a high voltage test under defined test conditions polyurethane lining factory applied lining which consists of polyurethane on the inside of the pipe or fitting Key 1 gasket seat 2 pipe barrel 3 spigot end 4 lining 5 internal socket profile Figure 1 — Location of the defined pipe areas Key 1 lining 2 internal socket profile Figure 2 — Location of the defined fitting areas 7 BS EN 15655:2020 EN 15655:2020 (E) specific lining resistance surface related electric resistance of the lining perpendicular to the pipe wall performance test test which is done once and is repeated according to a schedule or after relevant change of lining material and/or material supplier or change in process application routine test test carried out to control the manufacturing process with a frequency defined by the manufacturer 4 Ordering information The following information shall be supplied to the manufacturer by the purchaser. Ductile iron pipes according to EN 545, EN 598 or EN 969 but internally coated in accordance with this European Standard shall be specified in the purchaser39。 DN grouping ........................................................................................................ 16 Quality assessment system............................................................................................................... 17 Annex B (informative) Lining process and materials .................................................................................... 18 Lining application process ................................................................................................................ 18 Material properties.............................................................................................................................. 18 Field of use, characteristics of transported waters ........................................................................ 19 Annex C (informative) Packaging ................................................................................................................... 20 Bibliography ..................................................................................................... ................................................ 21 3 BS EN 15655:2020 EN 15655:2020 (E) Foreword This document (EN 15655:2020) has been prepared by Technical Committee CEN/ TC 203 ―Cast iron pipes, fittings and their joints‖, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2020, and conflicting national standards shall be withdrawn at the latest by July 2020. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards anizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, 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, Sweden, Switzerland and the United Kingdom. 4 BS EN 15655:2020 EN 15655:2020 (E) Introduction This standard is in conformity with the general requirements already established by CEN/TC 164 in the field of water supply (. potable water) and CEN/TC 165 in the field of waste water. In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard: a) no information is provided as to whether the product may be used without restriction in any of the member states of the EU or EFTA。R NOR M UNG Management Centre: rue de Stassart, 36 B1050 Brussels 169。E N DE NOR M A L I S ATI O N EUR OP 196。fverfahren This European Standard was approved by CEN on 22 November 2020. CEN members are bound to ply 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 todate lists and bibliographical references concerning such national standards may be obtained on application to the CEN 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 CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Esto