FIELD: technological processes.
SUBSTANCE: invention relates to metal forming and can be used in making steel cases for carbon-dioxide fire extinguishers. Ends of tubular billet from electrically welded pipe, made by welding with high-frequency currents from rolled metal with yield point exceeding 38 kgf/mm2, heating and forming a bottom and a neck.
EFFECT: increased reliability of housing due to reduced eccentricity and reduced probability of cracks appearance.
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