The article discusses the possibilities of using the nanoCAD Mechanics editor, developed by the Russian company Nanosoft JSC (www.nanocad.ru), for the automated design of pipeline sections with threaded flange connections. It is shown that for solving the problems in computer-aided design, there are various tools presented in the ribbon interface of the program. Such tools include the Standard command from the Standard group on the Mechanics tab, which opens the Select Parts dialog box. In the Select Parts dialog box, a functional panel of the Element Base is built-in, including: folders Pipeline fittings and Welded pipelines; dropdown catalogs Flanges, Gaskets and Pipes with element sizes that comply with ESKD standards. On the “Mechanics” tab, the Bolt connection tool from the Design group with the Mounting Details dialog box included in it is used, after calling it and specifying the start and end points of the connection, the Mounting Details dialog box opens. The last lists show bolts made according to ESKD standards. Insertion of flanges, gaskets, bends, pipes and bolt joints and their automated selection are carried out by left-clicking and selecting parameters in the corresponding dialog boxes.