| 7304.29.20 | 40 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.20 | 60 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.31 | 20 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.31 | 40 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.31 | 60 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.41 | 20 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.41 | 40 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.41 | 60 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.39.00 | 72 | Having a wall thickness of 19 mm or more | kg | | | |
| 7304.39.00 | 80 | Having a wall thickness of 19 mm or more | kg | | | |
| 7304.39.00 | 44 | Having a wall thickness of 19 mm or more | kg | | | |
| 7304.39.00 | 56 | Having a wall thickness of 19 mm or more | kg | | | |
| 7304.59.80 | 70 | Having a wall thickness of 19 mm or more | kg | | | |
| 7304.59.80 | 40 | Having a wall thickness of 19 mm or more | kg | | | |
| 7304.59.80 | 55 | Having a wall thickness of 19 mm or more | kg | | | |
| 7306.30.50 | 10 | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold drawn | kg | | | |
| 7306.30.50 | 15 | Other, cold-drawn | kg | | | |
| 7306.30.50 | 28 | Internally coated or lined with a non-electrically insulating material, suitable for use as electrical conduit | kg | | | |
| 7306.40.50 | | Having a wall thickness of 1.65 mm or more | | Free | | 11% |
| 7306.40.50 | 15 | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold-drawn | kg | | | |
| 7306.50.50 | 10 | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold-drawn | kg | | | |
| 7307.11.00 | | Of nonmalleable cast iron | | 4.8% | Free (A,AU,BH,CA, CL,E,IL,J,JO,MA, MX,P,SG) | 25% |
| 7307.11.00 | 30 | For threaded pipe | kg | | | |
| 7307.11.00 | 45 | For cast-iron soil pipe | kg | | | |
| 7307.93.90 | | With an inside diameter of 360 mm or more | | 4.3% | Free (A,AU,B,BH, CA,CL,E,IL,J,JO, MA,MX, P,SG) | 45% |
