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PVC waterstop, also termed as PVC water bar, PVC seal construction joint, is embedded in construction joints or movement joints to provide a physical barrier to water. It is made from high grade polyvinyl chloride, special resin and some chemical additives, such as plasticizers and stabilizers. The product goes through the process of mix, extrude. It has many species and specifications. The waterstop should be positioned accurately to prevent deflection or misalignment during concrete placement. It is fixed to adjacent reinforcing steel through outer flanges of the waterstop. The waterstop is used in various concrete structures, such as dam, canal, water reservoir, aqueduct, tunnel, culvert and so on.