Polyamide, referred to as PA tube, also known as Nylon tube.
It is a kind of synthetic fiber with good physical and chemical properties: wear resistance, can be used under the condition of sandstone and iron filings; smooth surface, reduce resistance, prevent rust and scale deposit; soft and easy Bending, easy to install and easy to machine.
At the same time, it has steel properties. When it needs a certain shape, it can be made into various shapes like a metal tube, and it does not require complicated equipment and tooling; it can withstand the corrosion of many chemical substances; it has stable size, low permeability and great resistance. Can be used as an insulator; long service life, even decades; good temperature resistance, can work in the environment of -40-100 °C.