GEH-547 is a hand electrode for metal surface valve surfacing under the Chinese GB/T984 EDCrNi-A-15 standard. It is mainly used for the valves and other sealing parts of high-rise boiler installations in power stations under 570℃. Surfacing welding is welding a special alloy surface at any part of the workpiece, its purpose is to improve the wear resistance, corrosion resistance and heat resistance of the working surface, in order to reduce the cost, improve the comprehensive performance and service life, with this function of the electrode for surfacing wear-resistant electrode, also known as surfacing electrode.