Pvc pipes are often used as threading pipes with good toughness. Common sizes are 16mm, 20mm, 25mm, 30mm, 40mm and 50mm.
Pvc water pipes are made of rigid PVC pipes with good strength, strong anti-aging ability and long service life. Its diameter is larger than the threading pipe, including 20mm, 40mm, 50mm, 90mm, 1 10mm, 200mm, etc.
The diameter of pvc drainage pipe is also the largest among all PVC pipes, and pipes below 160mm are enough for ordinary families. The drainage pipes in industrial places have the sizes of 200mm, 250mm, 400mm and 500mm.
Extended data:
Advantages of pipeline
1 has good tensile and compressive strength, but its flexibility is not as good as other plastic pipes.
2. Low fluid resistance: the wall of PVC-U pipe is very smooth, and the resistance to fluid is very small, and the roughness coefficient is only 0.009. Its water delivery capacity can be increased by 20% compared with the same caliber cast iron pipe and 40% compared with the concrete pipe.
3. Excellent corrosion resistance and drug resistance: PVC-U pipe has excellent acid resistance, alkali resistance and corrosion resistance, and is not affected by moisture and soil pH, so there is no need for anti-corrosion treatment when laying pipes.
4. Good watertightness: The installation of PVC-U pipe has good watertightness whether it is connected by adhesive or rubber ring.
5, anti-bite: PVC-U tube is not a nutrient source, so it will not be eroded by rodents. According to national sanitation foundation's experiment in Michigan, rats can't bite PVC-U pipes.
6. Performance test: curing time shrinkage, splitting strength, tensile strength, peeling strength, thermal stability, shelf life and release of harmful substances.
References:
Baidu encyclopedia -pvc tube