ICS 23.040.20; 23.040.45; 91.140.80; 93.030. Norma Europejska EN ISO 13264:2017 Thermoplastics piping systems for non-pressure underground drainage and sewerage - Thermoplastics fitting - Test method for mechanical strength or flexibility of fabricated fittings (ISO 13264:2010) ma status Polskiej Normy.