Isbn: 9787122402387 - 焊工自学考证上岗一本通 零基础焊工技能图解 焊工操作基础知识技能技巧 金属材料焊接性能热处理 气焊气割 焊工技能考核应用书籍 (1 risultati)

paperback. Condizione: New. Paperback.Pub Date:2022-03-01 Pages:791 Language:Chinese Publisher:Chemical Industry Press This book explains the necessary skills of welders in detail according to the actual work needs of welders. The main contents include: basic knowledge of welders. metal materials Welding properties and heat treatment knowledge. basics of welding technology. A brief introduction to the basic knowledge. skills and techniques of the daily operation of electric welders; the focus is on various typical weldi.…