| 730611 | Other tubes pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel-Welded, of stainless steel |
| 730619 | Other tubes pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel-Other |
| 730621 | Other tubes pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel-Welded, of stainless steel |
| 730629 | Other tubes pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel-Other |
| 730630 | Other tubes pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel-Other, welded, of circular cross-section, of iron or non-alloy steel |
| 730640 | Other tubes pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel-Other, welded, of circular cross-section, of stainless steel |
| 730650 | Other tubes pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel-Other, welded, of circular cross-section, of other alloy steel |
| 730661 | Other tubes pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel-Of square or rectangular cross-section |
| 730669 | Other tubes pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel-Of other non-circular cross-section |
| 730690 | Other tubes pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel-Other |
| 730711 | Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel-Of non-malleable cast iron |
| 730719 | Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel-Other |
| 730721 | Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel-Flanges |
| 730722 | Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel-Threaded elbows, bends and sleeves |
| 730723 | Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel-Butt welding fittings |
