Teflon tight-lined pipe has excellent chemical stability, can resist all strong acids, strong bases, strong oxidants, and does not interact with various organic solvents.PTFE has a wide temperature range, and can be used for a long time at -180 °C ~ 250 °C under normal pressure. After 1000 hours of treatment at 250 °C, its mechanical properties change little.PTFE has a very low friction coefficient, is a good anti-friction, self-lubricating material, its static friction coefficient is smaller than the dynamic friction coefficient, so it has the advantages of low starting resistance and smooth running when used to make bearings.Since PTFE is non-polar, heat-resistant and non-absorbent, it is also an excellent electrical insulating material.It also has excellent aging resistance, non-stickiness and non-flammability.Conductor insulation sheath, corrosive fluid medium pipeline, various electrical insulation parts used under high frequency, etc.The manufactured bars, pipes, films, bearings, gaskets, valves and other profiles and parts are widely used in the fields of machinery, chemical industry, aviation, electrical and electronics, defense industry, medical and health and electrical insulation.