1. Petroleum: Process pipelines for transporting corrosive media in petroleum transportation pipelines, chemical pharmaceuticals, printing and dyeing industries;

2. Firefighting: It has applicability to the water supply pipeline of sprinkler-proof and sprinkler systems;

3. Expressway: cable protection sleeves for electric power, communication, and expressways;

4. Coal mine: suitable for pipeline networks such as underground water supply and drainage, underground spraying, positive and negative pressure ventilation, gas drainage, fire sprinkler, etc.;

5. Sewage treatment: Sewage treatment discharge pipes, sewage pipes and anti-corrosion engineering of biological pools;

6. Power plant: process water waste slag and return water pipeline of thermal power plant;

7. Agriculture: networks for agricultural irrigation pipes, deep well pipes, drainage pipes, etc.;

8. Municipal engineering: applicable to high-rise building water supply, heating network heating, running water engineering, gas transmission, buried water transmission and other pipelines.