DIN EN ISO 4126-1:2016 过压保护安全设备.第1部分:安全阀(ISO 4126-1-2013+Amd 1-2016).德文版本EN ISO 4126-1-2013+A1-2016
Safety devices for protection against excessive pressure - Part 1: Safety valves (ISO 4126-1:2013 + Amd 1:2016); German version EN ISO 4126-1:2013 + A1:2016