The book "Contact joint electric welding of rods of reinforced concrete reinforcement" by N. L. Kaganova is an indispensable source of knowledge for anyone interested in modern welding technologies and construction. It carefully examines aspects related to contact joint welding, which is a key process in the production and installation of reinforced concrete structures. Author, N. L. Kaganov is a well-known specialist in the field of welding technologies and building materials, whose work has long established itself as authoritative and practical. In his book, he shares not only theoretical foundations, but also practical recommendations, which makes it useful for both students and professionals in the field of construction and welding. On the pages of the book, the reader will find a detailed description of the contact welding process, including its advantages and disadvantages. Kaganov focuses on how to choose the right welding equipment and materials, as well as the importance of complying with technologies to achieve maximum strength and durability of joints. This information will be especially useful to engineers, builders and welders who seek to improve the quality of their work and minimize the risks associated with the improper performance of welding operations. The book also touches on topical topics such as the impact of welding on the mechanical properties of valves, as well as issues related to the safety and environmental friendliness of processes. In the context of modern construction, where the requirements for the quality and sustainability of materials are constantly growing, understanding these aspects becomes especially important. Kaganov emphasizes that the competent use of contact welding not only improves the quality of structures, but also contributes to the saving of resources. This book will be of interest not only to specialists, but also to students of technical universities who study welding technologies and building materials. It will be an excellent addition to the training courses and will help future engineers to better understand the processes taking place in welding and construction. In addition, the book can be useful for those who work in related fields, such as architecture and design, since knowledge of the basics of welding rebar can significantly improve the quality of the designed structures. The author's style is distinguished by clarity and accessibility of presentation, which allows readers to easily assimilate even the most complex concepts. Kaganov not only shares his knowledge, but also inspires readers to further study the topic, emphasizing the importance of continuous learning and professional growth. His previous works are also noteworthy, as they cover a wide range of topics related to construction and welding, and are real guides to the world of engineering. If you are looking for a book that will help you to understand the intricacies of contact welding and improve your professional skills, “Contact Welding Electric Welding Rods Reinforced Concrete” will become your reliable assistant. Do not miss the opportunity to immerse yourself in the world of welding technologies and discover new horizons in construction. This book is not just a textbook, but a real find for all who strive for perfection in their profession.