国产精品一级无码不卡|日韩欧美传媒一区二区|97视频在线伦|五月天手机福利视频

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         Million tons of large-diameter seamless steel 
         pipes are exported to 32 countries and regions
        
            
         Dexin Steel Tube (China) Co., Ltd., founded in 2002, We can manufacture and supply seamless steel pipes with OD 1/8"(10.3mm)-56"(1422.4mm) and wall thickness below 5.91"（150mm) according to ASTM/ASME、DlN/EN、BS、JlS、GOST、GB standard and customers’special requirements . 
        
            
          
              
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            1995Year 
          
                  
          Incorporation
          
                
          
              
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           32Individual 
          
                  
          Sales Country
          
                
          
              
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           3000Many 
          
                  
          Customer
          
                
          
              
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        About Us
        
            
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