tubular coil

例句：

1. 1. The steel pipe is used as a support for the roof in the construction project.
   这个钢管在建设项目中用作屋顶的支撑。
2. 2. The tube coil is an important component of the heating system.
   管状线圈是供暖系统的一个重要组成部分。
3. 3. The tube coil is made of stainless steel and has good heat conductivity.
   管状线圈由不锈钢制成，具有良好的导热性。