1. Hot water and cold water pipe for production and domestic use;
2. Heating pipe, pipes used for heating installation on floor and wall, snow-melting devices for buildings in northern, park, airport, and so on;
3. Pipe used for solar energy water heater;
4. Coal gas and natural gas pipe;
5. Drinking water within a certain district, pipe used for reclaimed water project;
6. Piped used for central air conditioner, fan coil;
7. Industrial pipes used for oil transportation and cooling fluid;
8. Pipes used for sleeve of wire or cable;
9. Pipe/tube used for oxygen input in hospital;
10. Pipes used for irrigation project in agriculture or garden;
11. Pipes used for gas suction under condition of vacuum;
12. Tubes used in beverage factory for edible fluid