Wrought steel pipe is crafted from high‑grade raw steel, shaped into tubes of varying lengths and diameters. These pipes are essential in underground water and gas transport, electrical cable protection, and the fabrication of vehicles, bicycles, plumbing, heating systems, street lighting, and refrigeration units.
The welded variant begins with continuous steel strips fed through rollers that form a tubular shape. A precision welding station then fuses the strip edges, creating a seamless tube with a uniform wall thickness. This method offers high strength and cost‑effective production for medium‑to‑large diameter applications.
Seamless pipes originate from a solid steel billet that is heated and extruded through a die to produce a hollow tube. The resulting pipe is then machined to meet exact dimensional tolerances. Seamless construction eliminates potential weld defects, making it ideal for high‑pressure, high‑temperature service.
Both welded and seamless pipes typically undergo straightening to ensure dimensional accuracy. Smaller diameter pipes are threaded at the ends, enabling easy assembly into longer runs. Protective coatings—such as oil, paint, zinc or specialty primers—are applied based on the operating environment to prevent corrosion and extend service life.
Industry standards such as ASTM A106, ASTM A53, and API 5L guide the quality and performance criteria for wrought steel pipes, ensuring reliability across critical infrastructure projects.
