LSAW Steel Pipe

    The main production process of high pressure pipe: tube and blank heating, tube perforation, the extension of steel.     High-pressure pipe rolling, steel pipe diameter and diameter reduction, steel pipe cooling and finishing or can be said that the steel embryo heating perforation, heat pickling, pickling, cold-drawn carbon burn, head, spray standard, packaging, a seamless steel pipe manufacturing method characterized in that a rolling mill base having a plurality of rolls is provided, and a plurality of mandrel-type seamless tube rolling stands are continuously arranged in mutually different rolling directions, and the seamless steel pipe is rolled on such a manufacturing line And at least the wall thickness of the steel pipe in the circumferential direction of the rolled steel pipe is measured at a plurality of points, and at least the two ends of the respective rolls on the final rolling stand of the mandrel mill are controlled according to the measurement ...