| Standard International Trade Classification (SITC) - level 3 - Group | 737 | Metalworking machinery (other than machine tools) | 
                
                  
                    | Standard International Trade Classification (SITC) - level 5 - Basic Heading | 73731 | Soldering irons and guns | 
                
                  
                    | Standard International Trade Classification (SITC) - level 5 - Basic Heading | 73732 | Other brazing or soldering machines and apparatus | 
                
                  
                    | Standard International Trade Classification (SITC) - level 5 - Basic Heading | 73733 | Machines,apparatus for resistance welding of metal, automatic | 
                
                  
                    | Standard International Trade Classification (SITC) - level 5 - Basic Heading | 73734 | Other machines and apparatus for resistance welding of metal | 
                
                  
                    | Standard International Trade Classification (SITC) - level 5 - Basic Heading | 73735 | Machines,apparatus for arc(incl.plasma-arc) welding of metal,automatic | 
                
                  
                    | Standard International Trade Classification (SITC) - level 5 - Basic Heading | 73736 | Other machines and apparatus for arc welding of met | 
                
                  
                    | Standard International Trade Classification (SITC) - level 5 - Basic Heading | 73737 | Other machines and apparatus | 
                
                  
                    | Standard International Trade Classification (SITC) - level 5 - Basic Heading | 73739 | Parts for the machines and apparatus of subgroup 737.3 |