Szukana fraza: [Abstract = "The relations to calculate the maximum value of strains in processes of bending tubes on benders, in stretched layers of tubes, are presented in this work on the basis of the EU\-Directive concerning production of pressure equipment. It has been shown that for large deformations that occur during bending of the pipes on knees, logarithmic strain measures \(real\) and relative strain measures give different values of strain but equal wall thicknesses in the bending zone."]

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