国产 亚洲 欧美 另类中文,中文字幕日韩高清DVD,国产免费一区二区三区蜜桃,麻豆精品在线播放

　　Good news came from the site of Xingai steel recently. First trial production for φ6.0mm XGLB82A is successful at hard wire work shop of wire rod mill.

　　Rare factory in domestic can produce φ6.0mm because of remachining grooved roll and repeated debugging for rolling procedure as rolling groove with separate series. Collars of 5th production line and current process parts were used in this trial production and further discuss between technology department and workshop which optimized rolling procedure, guide system and groove system to guarantee production successfully.