2015DIN EN ISO 17778:2015-06 Plastics piping systems - Fittings, valves and ancillaries - Determination of gaseous flow rate/pressure drop relationships (ISO 17778:2015); German version EN ISO 17778:2015
2015DIN EN ISO 17778:2015 Plastics piping systems - Fittings, valves and ancillaries - Determination of gaseous flow rate/pressure drop relationships (ISO 17778:2015); German version EN ISO 17778:2015
1970DIN EN ISO 17778 E:2014-02 Determination of airflow and pressure drop relationships for plastic piping system fittings, valves and accessories (draft)