石油、化工、冶金、热电、核电和输热等高温压力管路外部的包覆绝热层 ,因内部输送高温液体或气体 ,在运行中受腐蚀、冲刷会导致管壁减薄 ;不断析出的沉淀物会使通道截面减小堵塞。为了防止泄漏、爆管以保证高效安全运行 ,定期检测管网关键部位的残留管壁厚度和沉积物分布是非 The outer insulation coating of high temperature pressure pipeline such as petroleum, chemical industry, metallurgy, thermoelectricity, nuclear power and heat transfer is corrosive due to the internal transport of high temperature liquid or gas, and erosion will lead to the thinning of the pipe wall. The precipitated deposits Things will reduce the cross-section of the channel blockage. In order to prevent leakage, squirting pipe to ensure efficient and safe operation, periodic inspection of the pipe wall of the key parts of the residual wall thickness and sediment distribution of non-