標準號：ISO 4427-3-2007
中文標準名稱：塑料管道系統.給水用聚乙烯(PE)管和管件.第3部分:管件
英文標準名稱：Plastics piping systems - Polyethylene (PE) pipes and fittings for water supply - Part 3: Fittings
標準類型：Q81
發布日期：2007/8/1 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：Q81
國際標準分類號：23.040.45
引用標準：ISO 1133-2005;ISO 1167-1;ISO 1167-3;ISO 3126;ISO 4427-1-2007;ISO 4427-2-2007;ISO 4427-5;ISO 4433-1;ISO 4433-2;ISO 9624;ISO 11357-6;ISO 12176-1;ISO 13951;ISO 13953;ISO 13954;ISO 13955;ISO 13957;ISO 14236;EN 681-1-1996;EN 681-2-2000
適用范圍：This part of ISO 4427 specifies the general aspects of fittings made from polyethylene (PE) for piping systemsintended for the conveyance of water for human consumption, including raw water prior to treatment andwater 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 fittings, their joints, to joints withcomponents of PE and to joints with mechanical fittings of other materials, intended to be used under thefollowing 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.It is applicable to fittings of the following types:? fusion fittings — electrofusion fittings, butt fusion fittings and socket fusion fittings (see Annex A);? fabricated fittings (see Annex B);? mechanical fittings;? flanged fittings.1) 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.