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工业现场试验的结果表明，带有小螺旋角的内外螺旋翅片管（简称内外螺旋翅片管或ＩＯＳＦ管）用于电站高压加热器有着显著的传热强化效果，其实测总传热系数是光滑管加热器的１．４３倍，可相应节省换热面积３０％。在等面积下使用，则可收到明显的节能效果。
The results of the industrial field test show that the internal and external spiral finned tubes with small helix angle (referred to as the internal and external spiral finned tubes or IOSF tubes) have significant heat transfer enhancement effect for high-pressure heaters in power plants. In fact, the measured total heat transfer coefficient is Smooth tube heater 1.43 times, which can save heat exchange area 30%. In the area of use, you can receive significant energy savings.