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

<var id="49rs0"><source id="49rs0"><meter id="49rs0"></meter></source></var>
    • 

    • <table id="49rs0"><acronym id="49rs0"></acronym></table>
  • <rp id="49rs0"></rp>
    

    <source id="49rs0"></source><table id="49rs0"></table>
  • <u id="49rs0"></u>
    


    



     
    

    


    

    

    Casus 
    
    
    
    
    Products>>
    Casus
    

    

      
     
    　　The material GSCM435-C made by XINGTAI IRON AND STEEL CORP., LTD is mainly used in car with a magnitude of 12.9 high strength fasteners. This product has good surface quality, smaller decarburization  layer and stable composition.It also possesses high strength,high toughness, wear-resistant corrosion resistance,high temperature resistance and other special characteristics.The customers response that this material has a good hardenability,heat treatment quality is stable,and also with a uniform hardness.