欧美妺子操一操_JULIA国产一区二区在线精品_无码吃逼操视频_黄色一级香蕉视频_WWW.cok操逼_亚洲色区爱_色噜噜影视_熟女日本视频_欧美 激情 另类 自拍_亚洲精品乱码久久久久久蜜桃明_淑女乱伦第一页_精品九九久久_ⅴ天堂在线_成人性爱在线性爱电影_国产V日韩

Steel plant of welding process

Steel plant of welding process

     This question directly affects the quality of the project attributed to the primary question, so this type of question it is necessary to see the company through the use of specialized professional view things only to view, judge them, usually based on the type of weld defects inside into slag, undissolved together, such as porosity. Foshan Steel

     Welding processes. The process works attributed to shade one step is also the most prone to the quality of questions from the 2004 report of a company's product quality accounting flashes occur in the process of quality questions: Because the quality of welding seam resulting in failure rates as high as 80% , and secondly because the wrong operating procedures and technical questions of the operator and the resulting weld quality doubt accounts for about 10%.