pipes and fittings

Sure Union International Ltd. is a supplier of various piping related products as well as sanitary items(include toilet seat and other bathroom accessories). Its business scope includes Pex-Al-Pex Pipe (or multilayer pipe ), pex pipe, PPR pipe, fittings and tools for these pipes, valves, faucets, drainage systems, bathroom shower, woven flexible hoses and other PVC and/or PE hoses.

Wednesday, June 22, 2005

History of PVC

Polyvinyl chloride was discovered late in the nineteenth century. Scientists observing the newly created chemical gas, vinyl chloride,also discovered that when the gas was exposed to sunlight, itunderwent a chemical reaction (now recognized as polymerization) resulting in an off-white solid material. But, the solid material was so difficult to work with that it was cast aside in favor of other materials. Years later in the 1920s, rubber scientist Waldo Semon was hired by BFGoodrich to develop a synthetic rubber to replace increasingly costly natural rubber. His experiments eventually produced polyvinyl chloride. Although product developers began to use PVC in a variety of ways ? in shoe heels, golf balls, and raincoats, to name just a few ? its application increased significantly during World War II.PVC turned out to be an excellent replacement for rubber insulation in wiring and was used extensivelyon U.S. military ships. After 1945, its peace-time usage exploded.