EN ISO 2503:2009 气焊设备,300巴(30MPa)以下的焊接,切割和相关工艺中使用的气体瓶的压力调节器[代替:CEN EN 13918]
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)