1. High strength, excellent resistance to environmental stress cracking, and good creep resistance. 2. Durable, with good flexibility and strong adaptability to uneven foundations and misalignments; capable of withstanding harsh conditions like earthquakes and typhoons. 3. Features excellent weather resistance (including UV resistance) and long-term thermal stability. 4. Corrosion-resistant; no need for protective treatment; long service life. 5. Smooth interior wall; low water flow resistance; high flow capacity; cost-effective construction. 6. Good wear resistance and resistance to abrasion. 7. Excellent resistance to low-temperature impact; safe within a temperature range of -20 to 40°C.Use, winter construction unaffected