螺旋纹管

例句：

1. 1. The spiral tube is used for heating and cooling fluids.
   螺旋管用于加热和冷却流体。
2. 2. The spiral tube is an important component of the heat exchanger.
   螺旋管是换热器的一个重要组成部分。
3. 3. The spiral tube is designed to improve heat transfer efficiency.
   螺旋管设计用来提高热传递效率。