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R. N. Rudnakov took part in developing the machining method, and the equipment at the All-Union Scientific Research Institute for Fuel Machiney was used for making up the headers.
Translated from Khimicheskoe i Neftyanoe Mashinostroenle, No. 10, pp. 32–34 October, 1966.
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Nosov, A.V. Composite machining of hexagonal holes in headers of complicated shape. Chem Petrol Eng 2, 674–676 (1966). https://doi.org/10.1007/BF01146246
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DOI: https://doi.org/10.1007/BF01146246