FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy. In order to increase crack resistance of steel sheet during production of welded pipes, sheet is subjected to heating to temperature of AC3+(30–50) °C and one-sided accelerated cooling to room temperature, followed by bending with deformation on side of accelerated cooled surface, which is used as inner surface of pipe.
EFFECT: high crack resistance of steel sheet.
1 cl, 2 dwg
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