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      Cangzhou Spiral Steel Pipes Group Co.,Ltd. 
      


      


      

	
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					Black / blue 3PE anticorrosive spiral steel pipe

					Black / blue 3PE anticorrosive spiral steel pipe

					
      3PE anti-corrosion refers to the three layers of PE pipe anticorrosion structure: the first layer of epoxy powder (FBE), the second layer of adhesive (AD), the third layer of polyethylene (PE) (polyethylene color is generally black, but als......
      

				
      

				

			
      

			

			
        
      

			
        

    
 
        
        
          
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日本高清视频在线一本视频

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