Occupational Skill Testing Training Primer: gas welder (senior workers)(Chinese Edition)

Paperback. Pub 2006 327 in Chemical Industry Press gas welders based on national occupational standards and vocational skills identification specification. systematic introduction to the basic knowledge and principles of gas welding. gas cutting focuses on gas welding. gas cutting operation techniques and equipment. combined with the actual gas welding process and operating techniques about a variety of commonly used materials and specialty materials. Theory with practice. focusing on practical. very purposeful and operability. Gas welders strive representative selection. in order to achieve mastery. giving top priority to the purpose. Gas welders for the majority of welding operators and technicians. teachers and students of professional schools also have a high reference value. Chapter 1 basics of metallurgy and welding metallurgy 1.1 Meta...