久久中文字幕久久无码,亚洲日韩va一区二区三区,99re6在线观看国产精品,成人国产精品秘 果冻传媒在线

    • <video id="boa4d"><mark id="boa4d"><noframes id="boa4d"></noframes></mark></video>
  • 
<b id="boa4d"><acronym id="boa4d"></acronym></b>
    <var id="boa4d"><track id="boa4d"><ins id="boa4d"></ins></track></var>
    <video id="boa4d"><mark id="boa4d"></mark></video>
    <u id="boa4d"></u>
    2. 


      



       
      

      


      

      

      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.