What is Pvc Lined Prestressed Concrete Cylinder Pipe and Why Do We Use Them?
PVC lined prestressed steel cylinder concrete pipe
PVC lined prestressed concrete cylinder pipe is a prestressed concrete cylinder pipe (PCCP) technology improvement products, the inner wall of the PVC anti-corrosion sheet is made of polyvinyl chloride as the main raw material, with other modified accessories through high temperature and high pressure extrusion molding. At present, the PVC anti-corrosion sheets we use are divided into T-shaped keys and diamond-shaped keys (as shown in the figure below). The T-shaped key structure is suitable for vertical vibration molding process and core mold vibration molding process, and the diamond-shaped key structure is suitable for centrifugal molding process and core mold vibration molding process. It is mainly used to transport seawater, urban sewage, industrial wastewater, strong acid and alkali and other strong corrosive media.
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Physical function of modified PVC anticorrosive sheet
Physical Test Items Test Method Standard value Tensile strength (longitudinal and transverse bond directions) A.S.T.M.D.412 17.25MPa(minimum) Elongation (measured at fracture) A.S.T.M.D.412 225%(minimum) Water-soluble substance content (24h) A.S.T.M.D.570 0.05%(minimum) Water absorption (75mm × 25mm, 24h) A.S.T.M.D.570 0.10%(minimum) Tearing force (longitudinal and transverse direction) A.S.T.M.D. 80N/mm(minimum) Hardness (Shore) A.S.T.M.D. 54°~62°Chemical function of modified PVC anticorrosive sheet
PVC lined prestressed steel cylinder concrete pipe-Shandong ...
PVC lined prestressed steel cylinder concrete pipe is a technical improvement product of reinforced concrete pipe (PCCP) for jacking construction method. Its inner wall PVC anti-corrosion sheet is made of polyvinyl chloride as the main raw material, and other modified auxiliary materials are extruded at high temperature and high pressure. At present, the PVC anti-corrosion sheet we use is a product imported from Taiwan, which is divided into two types: T-shaped key and diamond-shaped key (as shown below). The T-shaped key structure is suitable for vertical vibration molding process and core mold vibration molding process, and the diamond-shaped key structure is suitable for centrifugal molding process and core mold vibration molding process. It is mainly used to transport seawater, urban sewage, industrial wastewater, strong acid and alkali and other strong corrosive media.
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PVC anticorrosive sheet is generally coiled material with a thickness of not less than 1.5mm. It is produced and tested in Taiwan according to the requirements of CNS and K of the standard "PVC anticorrosive lining sheet" and DBJ15-53- tested in China according to the Guangdong standard "Technical Specification for Concrete and Reinforced Concrete Lining Modified PVC Drainage Pipeline Engineering.
PVC lined prestressed steel cylinder concrete pipe follows the traditional concrete pipe on the basis of economic and practical, easy installation, good stiffness, but also has a good anti-corrosion effect and small flow resistance and other characteristics.
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