Categoría anterior : 7304 - Tubos y perfiles huecos, sin soldadura (sin costura)*, de hierro o acero.
| Nombre de la compañía * | Ciudad / Ciudad-Estado | País |
|---|---|---|
| F**************** | Guayaquil | Ecuador |
| F******************** | United Arab Emirates | Emiratos Árabes Unidos |
| L**************************** | Lao People'S Democratic Republic | Laos |
| U********************* | Bangladesh | Bangladesh |
| S************* | Tanzania | Tanzania |
| K***************** | United Arab Emirates | Emiratos Árabes Unidos |
| U*********************************** | Madagascar | Madagascar |
| S******* | ML - Mali | Malí |
| S************************ | Nepal | Nepal |
| F*********************** | Canada | Canadá |
| K**************************************** | Lesotho | Lesoto |
| A******************** | United Kingdom | Reino Unido |
| D********************* | Bangladesh | Bangladesh |
| B************************* | Botswana | Botsuana |
| T******************* | Ethiopia | Etiopía |
| P******************************** | Mumbai | India |
| F******************************* | Pune/Maharashtra | India |
| S*************************** | Pune, Maharashtra | India |
| E******************** | India | India |
| K**************************** | Sri Lanka | Sri Lanka |
| З************ | Ленинградская область | Federación Rusa |
| A****************** | Saudi Arabia | Arabia Saudita |
| A************************* | Tanzania | Tanzania |
| P*********************** | United Kingdom | Reino Unido |
| T*********************************** | United Kingdom | Reino Unido |
| C***************** | Vietnam | Vietnam |
| M************************ | Viet Nam | Vietnam |