teflon (PTFE) has excellent chemical stability, can withstand all strong acids, strong bases, strong oxidants, and does not react with various organic solvents. Polytetrafluoroethylene made of bars, pipes, films, bearings, gaskets, valves and other profiled materials and parts.

PTFE pipe It has excellent insulation performance, low friction in known solid materials, good dielectric properties in all plastics, and amazing chemical resistance. It is an excellent self-lubricating material, often used in food processing, electrical parts, insulators, seals, bearings, high temperature working environment, etc. It is mainly suitable for some products with long specifications and non-standard mechanical parts. So, what problems should be paid attention to during the use of PTFE pipes, and under what circumstances should PTFE pipes not be used?

During the construction of polytetrafluoroethylene pipe, the seamless steel pipe shall be cut according to the actual size first, and the steel pipe shall be welded with the welding ring. The ring can be welded by argon arc welding. The spatter in the welding process shall be cleaned with a file, and the fillet weld shall be rounded without sharp edges. Then, drill a small hole at the end of the steel pipe, and make clear signs without blocking. This hole is used to discharge the residual gas between the steel pipe and the tetrafluoroethylene pipe during heating, and to investigate whether the tetrafluoroethylene pipe is damaged or leaked during pressure test. Steel pipes shall be pre assembled before lining. Asbestos pad of appropriate thickness shall be added at the interface during assembly, so as to meet the overall dimension requirements after lining. The assembled seamless steel pipe shall be sandblasted to remove the rust on the inner wall, and then the inner cavity of the pipe shall be purged with compressed air. Insert the PTFE pipe into the steel pipe.