Carbon steel pipe & fitting is work that involves the installation or repair of pipes or tubes. Pipes and tubes are necessary for a wide range of reasons. Carbon steel pipe & fitting is the occupation of installing or repairing piping or tubing systems that convey liquid, gas, and occasionally solid materials. This work involves selecting and preparing pipe or tubing, joining it together by various means, and the location and repair of leaks. Carbon steel pipe & fitting work is done in many different settings: HVAC, manufacturing, hydraulics, refineries, nuclear-powered Supercarriers and Fast Attack Submarines computer chip fab plants, power plant construction and other steam systems. Pipe fitting does involve occupational hazards sometimes, especially in instances of repair and replacement. Pipes and tubes are often used for transporting materials that are toxic or pose threats to human health. Pipe fittings are used to connect pipes. There are different varieties of pipe fittings made of various materials and available in various shapes and sizes. Pipe adapters, couplings, elbows, tees, sleeves, flanges, bulkhead fittings, reducers, valves etc. are all different types of pipe fittings.