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
气焊设备.300巴(30兆帕)以下焊接、切割和相关工艺用气瓶用压力调节器和带流量测量装置的压力调节器.修改件1