A Skilled Trade
Plumbing is the system of pipes, drains, fittings, valves and fixtures installed for the distribution of potable water for drinking, heating and washing. “Plumbing” also refers to the skilled trade which deals with the installation and maintenance of the above.
Part of Developed Economy
The plumbing industry is a basic and substantial part of every developed economy. Deriving from a Latin word for lead, as the first pipes used in the Roman era were lead pipes.
Types of Material and Accessories
Today, most plumbing supply pipe is made of steel, copper, plastic and cast iron. Galvanised steel is rarely used today for plumbing in new residential construction, as it is relatively expensive and difficult to work with due to weight and requirement of a pipe threader.
A pipe is typically formed via casting or welding, whereas a tube is made through extrusion. Pipe normally has thicker walls and may be threaded or welded, while tubing is thinner-walled and requires special joining techniques.