What is pipe? Each hollow cylinder can be called a pipe, but any hollow cylinder is pipe? Theoretically, following definition can be used for pipe: pipe is a hollow cylindrical pipe which is used for transfer or store of liquids, gases, and fluid substances. Pipe has been one of the best and most important inventions of humans, which has developed throughout history. pipes can be made from various materials such as iron (cast iron, galvanized sheet metal), steel, polyethylene and all types of plastics, glass, concrete and cement, etc. (and many other materials).
Pipe industry never ceases, and it only turns into from one form to another form, and development of this strategic product will continue. Production of all kinds of pipes varies according to gender and applications. Polyethylene pipes and metal pipes, and after that, the PVC pipe, is most used. Pipes are available in a wide range of sizes. It's not unusual at all that we have pipe with size of 1.2 inch and 66 inch high.