METHOD OF CIRCULAR PIPE RESHAPING Russian patent published in 2017 - IPC B21D9/00 

Abstract RU 2623558 C2

FIELD: construction.

SUBSTANCE: change of cross-section shape of circular plane-oval pipe with size ratio of 1/3.064.

EFFECT: increased pipe strength in bending.

7 dwg

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RU 2 623 558 C2

Authors

Marutyan Aleksandr Surenovich

Dates

2017-06-27Published

2015-12-14Filed