Pipe is manufactured to OD and wall dimensions. Generally available in any drawable metal or alloy with method of manufacture (seamless or welded) dictated by material, to OD/Wall ratio and wall thickness. Standards cover actual dimensions, tolerances, chemical and physical requirements.
Pipe is a tubular product intended primarily for such purposes as the conveying of water, fuel, gas, air, steam, etc. It has also been found to be a convenient form for use as structural members, such as columns and railings. Usually good for commercial applications.
