A tube mill is a complex, integrated production line used to continuously manufacture metal tubing and piping from flat coiled strip steel.
Process and Components
The operation starts with a decoiler feeding the flat strip into the line. The strip then passes through a series of forming rolls that progressively shape the flat material into a circular, open-seamed tube. The edges are then precisely heated and joined using high-frequency Electric Resistance Welding (ERW), creating a strong, longitudinal seam.
The freshly welded tube then undergoes external scarfing (weld bead removal) and sizing to achieve exact dimensions. Finally, a specialized Double Cut machine severs the continuous tube into precise, predetermined lengths without stopping the line. The entire mill is a marvel of synchronized motion, designed for high-speed, high-volume production with tight dimensional tolerances.