To solve the problem that oil could condense during the transportation in winter in northern china, an extendible heater, namely XZ-SJ, was designed to heat the oil in tank car.

• 为解决无加热装置铁路油罐车在北方冬季使用时，因油品冷凝而无法卸出的问题，设计了XZ-SJ型伸缩式加热器，放入油罐车内部对冷凝油品进行加热。