FIELD: plastic metal working, namely manufacture of welded products or tubes of steel strip or sheet. SUBSTANCE: method comprises steps of feeding strip heated at hot rolling to shaping zone, successively shaping it and welding its edges; before shaping cooling mean portion of strip along its whole length until temperature value providing at welding at least desired welding pressure on edges; cooling mean portion of strip along width value non including distance until strip edges corresponding to near-joint zone. EFFECT: possibility for making reliable high-strength welded joints. 2 cl
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