1.Pipeline preheat 2. High efficient 3. Convenient 4. Easy to operate Features and technical dataSuitable for using with direct heating asphalt tank container, asphalt container, asphalt storage tank, solution for the asphalt congeal in the pumps, valves and pipeline.It is a hot oil heating device and the heating source can be electricity, fuel oil, 18KW X N (groups);Heated asphalt pump, 25m3/h x ...