How High Temperature Resistant Is PVC Plastic Pipe
Apr 02, 2022
Characteristics: PVC-U plastic pipe has excellent bending performance, good chemical corrosion resistance, mechanical strength, aging resistance and temperature resistance.
Bearing capacity: PVC-U plastic pipe can bear the heavy pressure of foot without breaking.
Application fields of PVC-U plastic pipe: wire sleeve, decorative sleeve, suitable for liquid and oil transportation, power line protection, automobile harness protection, machine tool machinery, automatic instruments, etc.
PVC-U plastic pipe is light in weight and convenient in handling and loading. PVC-U plastic pipe is light in material, with a specific gravity of only 1 / 5 of iron pipe. It is convenient in handling, loading and unloading and construction, which can save construction costs. PVC-U plastic pipe has excellent corrosion resistance and drug resistance. PVC-U plastic pipe has excellent acid resistance, alkali resistance and corrosion resistance. It is very suitable for chemical industry, wastewater drainage, sanitary sewer and other purposes. The wall surface of PVC pipe is smooth with low fluid resistance. Its roughness coefficient is only 0.009, which is lower than other pipes. Under the condition of the same diameter, the flow is large and scale is not attached. PVC-U plastic pipe has high mechanical strength and good water pressure strength and impact strength. At room temperature, PVC-U plastic pipe is suitable for piping engineering under various conditions.
PVC-U pipe is used as drainage pipe. Due to its own characteristics, the indoor continuous drainage temperature shall not be greater than 40 ℃, and the instantaneous drainage temperature shall not be greater than 80 ℃. This is often ignored. In the process of long-term use, it will lead to water leakage at the pipe joint, especially in some biochemical laboratories in the experimental building of colleges and universities. The solution can only be to replace other metal drainage pipes. At the same time, the installation of a PVC pipe should avoid being arranged in the heat source accessories, which should be paid special attention to when installing the kitchen drainage pipe. It is necessary to ensure the spacing between the drainage pipe and the stove. If it cannot be avoided, thermal insulation measures should be taken.
When PVC-U drainage pipe is applied in high-rise buildings. Some engineers and technicians failed to take measures to prevent fire penetration according to the technical regulations. The correct approach is: according to the technical regulations, the riser shall be set in the open and its diameter shall be greater than or equal to 110mm ~ l, - J, at the floor where the riser crosses. Measures shall be taken to prevent flame penetration; When the exposed horizontal drainage branch pipe with a diameter greater than or equal to 110mil is connected to the pipe well and the riser in the pipe, measures to prevent flame penetration shall be taken at the place where it crosses the pipe well and pipe hole wall. The horizontal main pipe should not pass through the partition wall and firewall of fire compartment; When crossing is unavoidable, measures to prevent flame penetration shall be taken on both sides of the pipeline crossing the wall, such as waterproof casing, fire ring, etc.
