Nylon tube (polyamide), referred to as PA tube, also known as Nylon tube. It is a kind of synthetic fiber with good physical, chemical and mechanical properties: wear-resistant, can be used under the conditions of sand, gravel and iron filings; smooth surface, reduce resistance, can prevent rust and fouling; soft, easy to use Curved for easy installation and simple processing. At the same time, it has rigidity. When a certain shape is required, it can be made into various shapes like a metal tube, and does not require complex equipment and tooling; it can withstand the corrosion of many chemical substances; it has stable dimensions and low permeability; Can be used as an insulator.