FIELD: machine building.
SUBSTANCE: pipeline (1) has cylindrical inner surface (2). In order to optimise flow on inner surface (2) of pipeline (1), there are equally distributed cavities (3) in the form of ball segments; at that, distance (d) in axial direction between centres of adjacent cavities (3) corresponds to curvature radius of ±10%.
EFFECT: reduction of losses in fluid medium flow.
8 cl, 2 dwg
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|
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|
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