The articie consider the problem of increasing technological efficiency of the pipelines of ship systems at the design stage. The ways of manufacturing and assembling the ship pipelines without measuring in situ have been presented. There has been done the analysis of standardized deviations controlled in the process of pipe manufacturing according to the drawings. The article reveals the reasons making inappropriate the technology of manufacturing pipes according to the project documentation by the method of bending. The reasons of deviation development and amount of deflection from structural dimensions that arise during the pipe manufacturing have been determined.