Properties:
1. Sanitary and innoxious: No breeding algae or microbe, no second pollution to water;

2. Smooth inner wall: Less friction, larger water passage capacity;

3. Light weitht: 1/5 of cast iron pipe, easy to transport and construct;

4. Easy to install: To connect with adhesive or elasticity airproof rubber-ring, safe and fast;

4. Strong mechanic intension: Resistant to press and impact, applicable to various pipe work;

5. Long service life: Up to 50 years in common conditions.

Application area: Drainage for construction system.