FIELD: cryogenic engineering. SUBSTANCE: elements of technological processes, containers and pipes are made from superstrength low-alloy steels containing lesser than 9 mas.% of nickel at rupture strength higher than 830 MPa (120 kg per sq.in) and ductile-brittle transition temperature (DBTT) below -73 C (- 100 F). EFFECT: enhanced efficiency. 17 cl, 13 dwg
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