The book describes the following issues of gas-flammable metal processing: equipment for the production of acetylene equipment for the supply of welding posts with acetylene and gas substitutes equipment and technology of gas welding of surfacing and gas-press welding equipment and technology of separation and surface oxygen and oxygen-flux cutting equipment and technology of gas-electric cutting methods of gas-flame correction equipment and technology of flame surface quenching equipment , equipment and technology of metallization by spraying with gas flame application of coatings from plastics by the method of gas-flame spraying welding of plastics safety during gas-flame processing of metals . The book is a training manual for instructor courses on the introduction of advanced methods of welding and surfacing metals into the national economy .