Plastics piping systems for non-pressure underground drains and sewers -
Structured-wall piping systems of unplasticized poly(vinyl chloride)
(PVC-U), polypropylene (PP) and polyethylene (PE) - Part 1: General
requirements and performance characteristics
Thermal insulating products for building equipment and industrial
installations - Determination of dimensions, squareness and linearity of
preformed pipe insulation - Amendment 1 (ISO 12628:2022/Amd 1:2025)