炼油厂、石油化工厂根据输送流体介质、耐受压力和温度的不同,大量使用不同管径和不同材质的配管。当输送腐蚀性介质时,常常会在配管与设备接口处出现由于长时间使用而产生腐蚀损伤和机械损伤的现象,必须及时修补才能继续安全使 Refineries, petrochemical plants according to the delivery of fluid medium, withstanding the pressure and temperature differences, a large number of different diameter and different materials piping. When transporting corrosive media, often appear in the piping and equipment interface due to prolonged use of corrosion damage and mechanical damage, the phenomenon must be repaired in time to continue to make safety