A Double Pipe Heat Exchanger consists of one pipe inside another, allowing two fluids to flow separately—one through the inner pipe and the other through the annular space. Heat is transferred between the fluids through the pipe wall. Its simple and robust design makes it ideal for small-scale or high-pressure industrial applications. https://www.heatexchanger.co.in/Heat-Exchanger/Double-Pipe-Heat-Exchanger/