DIN EN ISO 2503:2015-12
Действует
Gas welding equipment - Pressure regulators and pressure regulators with flow-metering devices for gas cylinders used in welding, cutting and allied processes up to 300 bar (30 MPa) (ISO 2503:2009 + Amd 1:2015); German version EN ISO 2503:2009 + A1:2015
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