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The relevance of this paper is determined by the pipe manufacturing from polymer and metal-polymer materials, that requires hydraulic calculations. Purpose: The purpose is to describe reasons affecting the accuracy of the hydraulic calculation of pipes made of polymer materials and show changes in their hydraulic potential, depending on these reasons. Methodology/approach: Assessment of the influence of process parameters on hydraulic characteristics, classical equations of hydraulic calculation of water pipes. Research findings: The paper shows the influence of technological tolerances for the outer/inner diameter of pipes and the pipe wall thickness on the accuracy of hydraulic calculation of pipes made of polymer materials. Value: It is advisable to establish regulatory requirements for inner surface roughness of pipes made of polymer materials and perform their hydraulic calculation with respect to real hills and valleys which constitute surface roughness.
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Prodous et al. (2024) studied this question.
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