Plumbing is referred to as the installation of metal, plastic, cement, etc. pipes for the transfer of liquids, gases, and sometimes small solids. In the internal pipework industry, they can be made of wood, glass, steel, aluminum, plastics and cement. Sometimes in the industry, plumbing is also used for titanium, chromium, and other steel alloys.
The inner parts of a plumbing are commonly used to measure and control pressure, temperature and flow rates. For plumbing in old buildings, they used lead pipes, but nowadays pipes are used for this purpose. Plumbing is used in homes for the transfer of water and gas to homes and gardens and sewage drainage. Recently, polypropylene tubes (green tubes or plastic tubes) are used for plumbing in homes, facilities, and more.