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

Casus Products>> Casus

  The 23MnB4 produced by XINGTAI STEEL has the advantages of stable composition, high steel purity, small decarburization layer, fewer surface defects, and good hardenability. A customer of XINGTAI STEEL used this steel grade to produce automotive fasteners. The customer reported that the product has stable performance and excellent cold heading performance, which can meet the final product usage requirements.