ISO 4427-2:2007 塑料管道系统 供水用聚乙烯管和配件 第2部分：管子

标准编号：ISO 4427-2:2007

中文名称：塑料管道系统 供水用聚乙烯管和配件 第2部分：管子

英文名称：Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply — Part 2: Pipes

发布日期：2007-08

标准范围

This part of ISO 4427 specifies the pipes made from polyethylene (PE) intended for the conveyance of waterfor human consumption, including raw water prior to treatment and water for general purposes.It also specifies the test parameters for the test methods to which it refers.In conjunction with the other parts of ISO 4427, it is applicable to PE pipes, their joints, to joints withcomponents of PE and to mechanical joints with components of other materials, intended to be used underthe following conditions:a) a maximum operating pressure (MOP) up to and including 25 bar1);b) an operating temperature of 20 °C as the reference temperature.NOTE 1 For applications operating at constant temperatures greater than 20 °C and up to 40 °C, see ISO 4427-1:2007,Annex A.NOTE 2 ISO 4427 covers a range of maximum operating pressures and gives requirements concerning colours andadditives. It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, takinginto account their particular requirements and any relevant national guidance or regulations and installation practices orcodes.Three types of pipe are specified:? PE pipes (outside diameter dn), including any identification stripes;? PE pipes with co-extruded layers on either or both the outside and/or inside of the pipe (total outsidediameter dn), as specified in Annex A, where all layers have the same MRS rating.? PE pipes (outside diameter dn) having a peelable, contiguous, thermoplastics additional layer on theoutside of the pipe (“coated pipe”), see Annex A.1) 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

标准预览图