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1. Improving reliability of drill pipe by strengthening of thread connections of its elements
(Geotechnical and Mining ­Mechanical Engineering, Machine Building)
...  Abstract: It is recommended to include surface strengthening by plastic deformation into technological process of manufacturing boring pipes and nipples connecting them, which are made of 40ХН ...
Created on 19 August 2019

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ISSN (print) 2071-2227,
ISSN (online) 2223-2362.
Journal was registered by Ministry of Justice of Ukraine.
Registration number КВ No.17742-6592PR dated April 27, 2011.

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