| 
            Boiler tubes           | 
                  
                       | 
                  
            73063010           | 
                  
                       | 
              
          
                  | 
            Coated with zinc by the iron-zinc alloyed coating method, containing by weight less than 0.04% of carbon and of a thickness not exceeding 1.2 mm           | 
                  
                       | 
                  
            72104911           | 
                  
                       | 
              
          
                  | 
            Containing by weight 0.6% or more of carbon           | 
                  
                       | 
                  
            72101110           | 
                  
                       | 
              
          
                  | 
            Containing by weight 0.6% or more of carbon           | 
                  
                       | 
                  
            72101210           | 
                  
                       | 
              
          
                  | 
            Containing by weight less than 0.6% of carbon and of a thickness of 0.17 mm or less            | 
                  
                       | 
                  
            72091891           | 
                  
                       | 
              
          
                  | 
            Containing by weight less than 0.6% of carbon and of a thickness of 0.17 mm or less            | 
                  
                       | 
                  
            72092810            | 
                  
                       | 
              
          
                  | 
            Copper brazed pipes and tubes           | 
                  
                       | 
                  
            73069010           | 
                  
                       | 
              
          
                  | 
            Copper-plated, fluororesin-coated or zinc-chromated steel tubes with an external diameter not exceeding 15 mm           | 
                  
                       | 
                  
            73063020           | 
                  
                       | 
              
          
                  | 
            Corrugated           | 
                  
                       | 
                  
            72112310           | 
                  
                       | 
              
          
                  | 
            Corrugated           | 
                  
                       | 
                  
            72112910           | 
                  
                       |