Seamless steel tubes are materials made of an alloy of iron, carbon and other elements. Seamless steel tubes are used in the machine and construction industry, but they also can be found in other manufacturing and industrial applications. In the tubular systems the steel tubes are used to transport fluids and gasses for commercial and residential buildings. From the production technology point of view we recognize rolled seamless tubes and precision drawn seamless tubes.
Seamless steel tubes are described in the technical specifications. Seamless steel tubes are characterized by sizes/dimensions and its tolerances, the type of steel and technical and delivery conditions (TDC). For seamless steel tubes individual national standard institutions used various procedures to standardize the data.