DANSK DSF/ISO/FDIS 4427-2 PDF

This document specifies the pipes made from polyethylene (PE) for buried or above ground applications, intended for the conveyance of water for human consumption, raw water prior to treatment, drainage and sewerage under pressure, vacuum sewer systems, and water for other purposes. NOTE 1 – The intended uses include sea outfalls, laid in water and pipes suspended below bridges For the transport of water intended for human consumption in contaminated soils, special care should be taken. NOTE 2 – ISO 21004 provides alternative solution for use in contaminated soils. See Reference [2] in the Bibliography. This document specifies three types of pipe: – 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 outside diameter dn) where all layers have the same MRS rating; – PE pipes (outside diameter dn) having a peelable and contiguous thermoplastics additional layer on the outside of the pipe (“coated pipe”). This document also specifies the test parameters for the test methods referred to in this International Standard.