The tutorial provides basic information about the purpose, content, basic principles and organization of technological preparation of welding production. The types of technical documents, their purpose and content; fundamentals of design of technological process of manufacture of welded structures. Special attention is paid to the optimisation of the design for manufacturability. A careful study of the textbook material will prepare the student for designing welded structures with the required accuracy and reliability at a given performance and economic efficiency, as well as development of technological processes of welding, providing the weld joints with the desired properties of reliability and safe operation of welded products. Designed for students training areas 15.03.01 mechanical engineering, 12.03.05 "Laser engineering and laser technologies" may be useful to students of lyceums, colleges, vocational schools and technical schools.