Problems and applications of UPVC pipes
Problems with UPVC pipes:
1, temperature impact
The UPVC pipe has poor heat resistance and the tensile strength decreases at temperatures above 60 °C. Therefore, the design should be kept away from the heat source, such as the side of the stove is greater than or equal to 400mm, while the hot water pipe should be insulated, not through the flue and firewall.
2, the effect of stiffness
UPVC pipe should have a firm fixing bracket for each layer of the riser. The fixing bracket can control the expansion direction of the pipe, and can also share the weight of the riser, and also protect the pipe head connected to the horizontal pipe of the riser from excessive pressure. , causing the pipe to rupture and leak, and the bottom of the riser should also be provided with fixed measures such as piers or hangers.
3, building fire prevention issues
China's research on PVC plastic flame retardant technology generally has a tendency to unilaterally pursue the improvement of oxygen index and ignore the research on smoking performance.
Application areas of UPVC pipes:
1. Tap water piping project (including indoor water supply and outdoor municipal water pipe), UPVC plastic pipe has the advantages of acid and alkali resistance, corrosion resistance, no rust, no scaling, protection of water quality and avoidance of water pollution.
2, water-saving irrigation piping project, the use of UPVC sprinkler irrigation system can save 50%-70% compared with ordinary irrigation, while saving fertilizer and pesticide use, crop yield can be increased by 30%-80%.
3. Construction piping engineering.
4, UPVC plastic pipe has excellent insulation capacity, and is also widely used as a postal and telecommunications cable conduit.
5, UPVC plastic pipe is resistant to acid and alkali, corrosion, and many chemical plants are used as infusion piping. Others are also used in sinking engineering, medical piping engineering, mineral brine transportation piping engineering, and electrical piping engineering.
