This document specifies the pipes made from polyethylene (PE) for buried or above ground applications, intended for the conveyance of:<\/p>\n
\u2014 water for human consumption;<\/p>\n
\u2014 raw water prior to treatment;<\/p>\n
\u2014 drainage and sewerage under pressure;<\/p>\n
\u2014 vacuum sewer systems;<\/p>\n
\u2014 water for other purposes.<\/p>\n
NOTE 1 The intended uses include sea outfalls, laid in water and pipes suspended below bridges.<\/p>\n
Pipes complying with this document are not intended for the transport of water intended for human consumption in contaminated soils unless special consideration has been taken.<\/p>\n
NOTE 2 For example, ISO 21004 provides an alternative solution for use in contaminated soils. See Reference [3] in the Bibliography.<\/p>\n
This document specifies three types of pipe:<\/p>\n
\u2014 PE pipes (outside diameter d<\/i>n<\/sub>), including any identification stripes;<\/p>\n \u2014 PE pipes with co-extruded layers on either or both the outside and\/or inside of the pipe (total outside diameter d<\/i>n<\/sub>) where all layers have the same MRS rating;<\/p>\n \u2014 PE pipes (outside diameter d<\/i>n<\/sub>) having a peelable and contiguous thermoplastics additional layer on the outside of the pipe ("coated pipe").<\/p>\n This document also specifies the test parameters for the test methods referred to in this document.<\/p>\n In conjunction with the other parts of the ISO 4427 series, this document is applicable to PE pipes, their joints and to joints with components made of PE and other materials, intended to be used under the following conditions:<\/p>\n a) a maximum allowable operating pressure (PFA) up to and including 25 bar[1];<\/p>\n b) an operating temperature of 20 \u00b0<\/i>C as the reference temperature.<\/p>\n NOTE 3 For other operating temperatures, guidance is given in ISO 4427-1:2019, Annex A.<\/p>\n This document covers a range of maximum allowable operating pressures and gives requirements concerning colours.<\/p>\n NOTE 4 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and installation practices or codes.<\/p>\n [1] 1 bar = 0,1 MPa = 105<\/sup> Pa; 1 MPa = 1 N\/mm2<\/sup>.<\/p>\n","protected":false},"excerpt":{"rendered":" Plastics piping systems for water supply, and for drainage and sewerage under pressure \u2014 Polyethylene (PE) \u2014 Part 2: Pipes<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ISO<\/b><\/a><\/td>\n 2019-08<\/td>\n 28<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":616358,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[349,1277,1294,2634],"product_tag":[],"class_list":{"0":"post-616345","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-23-040-20","7":"product_cat-91-140-60","8":"product_cat-93-025","9":"product_cat-iso","11":"first","12":"instock","13":"sold-individually","14":"shipping-taxable","15":"purchasable","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/616345","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/616358"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=616345"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=616345"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=616345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}