Mainly used in petroleum, chemical, synthetic fiber, chemical fertilizer, power station, metallurgy, food and medicine and other industrial sectors to transport clean or particle-containing liquids, low or high temperature liquids, neutral or corrosive liquids, and the temperature of the conveying medium is -45°C ~200°C. High temperature type and slurry type medium temperature -60°C~+360°C to transport corrosive slurry with particles at high temperature and normal temperature, or corrosive liquid similar to water It is suitable for chemical, petroleum, metallurgy, pharmaceutical, brewing, power generation, food, environmental protection, etc. and harsh environments.