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The paper analyzes the problems of exploitation of pipe outlets for the oil and gas industry and describes the special design of the outlet’s vane, which allows to extend its service life. However, this special shape of the vane requires new manufacturing technologies. The paper lists the technical requirements for the finished model of the outlet and the method of its manufacture. Based on them, an analysis was carried out, and has been proposed the application of additive technologies for the manufacture of a steel pipe outlet with the vane, namely, the method of Selective Laser Melting (SLM). The advantages and particularities of the method’s application are described, as well as the stages of the manufacturing process for manufacturing an outlet with a special shape of the vane.

The article presents the results of finite-element modeling of the local calibration-bending process of large-diameter pipes in the weld zone with control of the dynamics changes in the geometry of the inner and outer surfaces of the workpiece, the base diameter, the total deformation of the perimeter and ovalization of the contours. The author has developed the technique of determining the coordinates of surface grid nodes based on an algorithm implemented in a special LUA-program for the QForm complex. The developed modeling technique allows us to determine the optimal working stroke of the tool and other parameters of the local calibration of the tube billet to minimize its degree of ovalization. An example of the implementation of the local calibration method and the predicted change in the geometry of the contour of the pipe billet with diameter φ1420×40 made of K60 steel with the initial shape defects after welding is given. The technical implementation of the method of local correction and prediction of the tube billet profile is complemented by the possibility of editing it by expansion. Improving the accuracy of geometry in the end zones of pipes will directly increase the possibility of high quality butt-welding during installation of pipeline systems.

A procedure has been developed for calculating the geometric, kinematic and energy-power parameters of helical rolling, which allows a comparative analysis of the processes carried out in stands of various designs. Based on the results of this analysis, a helical rolling mill was designed and manufactured which allows to roll materials with high deformation resistance at high temperatures. The results of the study of the mechanical characteristics of molybdenum bars and wires made by new technology are presented.