This document discusses the production and properties of polyvinyl chloride (PVC). PVC is produced from salt and oil/gas. Salt is dissolved in water and decomposed using electricity to produce chlorine, which is then combined with ethylene from oil/gas cracking to make vinyl chloride monomer. Vinyl chloride is polymerized to produce PVC. PVC has properties including weathering stability, versatility in forms, fire resistance due to chlorine content, and recyclability. Common applications of PVC include medical, transportation, construction, packaging, and art/design uses. The document also evaluates PVC/rubber composites for irrigation pipes.