EN 1055:1996 Plastics piping systems - Thermoplastics piping systems for soil and waste discharge inside buildings - Test method for resistance to elevated temperature cycling
EN 16397-2:2014 Flexible couplings - Part 2: Characteristics and testing for metal banded flexible couplings, adaptors and bushes
EN 476:2011 General requirements for components used in drains and sewers
DIN EN 16397-1:2015 history
2015DIN EN 16397-1:2015-01 Flexible couplings - Part 1: Performance requirements; German version EN 16397-1:2014