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Translated from Khimcheskoe i Neftyanoe Mashinostroenie, No.5, p.39, May, 1978.
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Maslennikov, S.N. A device for assembling and tack welding the disks of the wedge of gate valves. Chem Petrol Eng 14, 471 (1978). https://doi.org/10.1007/BF01156338
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DOI: https://doi.org/10.1007/BF01156338