Polyvinyl Chloride (PVC) piping: This is the most widely used plastic piping material. PVC piping is used for drain-waste-vent (DWV) sewers, water mains, water service lines, irrigation, conduit, various industrial installations. It can be used under ground or above ground in buildings. It can also be used outdoors if the pipe contains stabilizers and UV inhibitors to shield against ultraviolet radiation.
Source: http://www.contractorspipe.com/
Polyvinyl chloride (PVC) tubing: This is a type of plastic tubing that is corrosion-resistant, flexible, and flame retardant. PVC tubing also does not shrink in heat and offers excellent electrical and physical performance. It can be used as a hard plastic or it can be made softer and more flexible by adding plasticizers. This softer form is the type used to make tubing, hoses, and pipelines.
Other products of PVC: Boat fenders, garden hose, electrical wire insulation, vinyl flooring, roof gutter, children's doll and a medical transparent tube.
Glossary
Plasticizers: any of a group of substances that are used in plastics or other materials to impart viscosity, flexibility, softness, or other properties to the finished product.
Stabilizers: The stabilizer protects PVC pipe compound and compound polymer chains from
thermally degrading during the extrusion process. (Source: http://www.pwpipe.com/literature/tb/tb-s3.pdf)
Extrusion: The act or process of pushing or thrusting out.
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