Welded Tubes

Welded tubes are made from hot rolled or cold reduced strip, sheet or plate. Welded tube includes hollow sections, black and galvanised gas/water pipe, scaffolding tube and large diameter pipe. Small and medium diameters are produced in continuous, multiple-roll mills that progressively bend incoming, unheated strip into a circular cross-section prior to welding along the longitudinal seam. Tube may subsequently be cold-drawn through dies to achieve precise dimensions and finish. Large diameters (400-1,600mm) are made from discrete plate which is welded in an "O" shape before being mechanically or hydraulically expanded. Spiral welded tube/pipe is available in diameters up to 2,500mm.
Welded tubes are used in a wide range of general engineering applications as well as in power generation plants, oil refineries, automotive manufacturing and furniture production.