三级片a片无码_蜜乳AV成人电影_丝袜足交视频在线_日韩精品中文字幕亚洲专区腿精_安徽搡BBBB槡BBBB_欧美日B操B_非洲AV成人无码久久精品_av尤物_www.亚洲黄_WWWWWW美国黄片_蜜乳av影视_久久久亚洲成人AV无码电影_A片免费看在线不卡_国产无码8区_日屄福利视频

The stain-steel mill of Xingtai Steel successfully developed and produced LZ50 Axle Steel for high-end railway vehicle through ESR
  Updatetime:2018-12-21 Hits:

  To further expand the market and increase the variety of remelting steel, recently, the stain-steel mill of Xingtai Steel successfully developed and produced LZ50 Axle Steel for high-end railway vehicle through ESR. It is a kind of high-quality specialty steel and the smelting of this steel is very difficult.

  This steel is a kind of quality carbon steel with high strength index and high plasticity index. It needs high flaw detection quality. The internal defects also should be strictly controlled in the smelting process

  This exploitation makes full use of our company’s advanced equipment and accurate control performance. We made a smelting production plan carefully and produced qualified remelting ingot which has smooth surface, uniform composition, high cleanness for many times.

  The successful production of this steel marks electro-slag technology of our company has reached a new height. This type of steel became a new member of specialty steel in Xingtai Steel.