Codes & Standards - Purchase
— PE solid wall single layered pipes (nominal outside diameter, dn), including any identification stripes;
— PE pipes with co-extruded layers on either or both the outside and inside of the pipe (total outside diameter, dn), as specified in Annex A, where all layers have the same MRS rating;
— Coated PE pipes (outside diameter, dn) having a peelable, contiguous, thermoplastics additional layer on the outside of the pipe (coated pipe), as described in Annex A.
In addition it covers:
— jointing of pipe lengths by means of butt fusion;
— fabricated and injection-moulded fittings made of PE;
It is applicable to PE pipes, fittings and assemblies intended to be used at an operating temperature of 20 °C as the reference temperature.
NOTE For other operating temperatures, guidance is given in ISO 4437-5:2014.