FIELD: technological processes.
SUBSTANCE: pipes are mechanically cleaned from insulation, cut in parts, every part of pipe is jointed along seam, prepared billets are unbent with the help of press and/or rollers to produce steel sheets, steel sheets are cut by perimeter. At that jointing of each part of pipe is carried out longitudinally only along single seam. Then prepared billets are mechanically opened and unbent. Removal of residual stress in metal is carried out by means of reverse bending of sheets. Finished steel sheets are packed by contraction with packing tape.
EFFECT: process simplification and cost reduction.
2 dwg
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