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>
    


    



     
    

    

    

    Main Products
    

    
  
  
    
  
    
  
      

      • 

      • 

    

    


    

    

    


    
           
    
       
    
        
    
       	    
    
          
          
    
            Products Grade: 60Si2CrA,60Si2Mn
          
    
          
    
            Specifications: φ13,14mm
          
    
          
    
            Applied Standard:  agreement
          
    
          
    
            Characteristics: spring clip fastener used in railway track

          
    
          
    
            Applications: Railway fastener
           
    
      
        
    
      
    

    Use of Products: The wire rod of 60Si2CrA, which is common steel grade to produce spring clip fastener widely used in  railway track, has characteristics of uniform-chemical composition, low gas content and harmful elements, high purity, slight decarburisation, good surface quality and drawability as well as consistent heat-treatment quality.