ISO 2503:2009/Amd 1:2015
气焊设备.用于压力在300 bar(30 MPa)以下的焊接,切割及相关工艺的调压器和配备气瓶用流量计装置的调压器;修改件1
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); Amendment 1