7304.29.41 | 10 | Having a wall thickness less than 12.7 mm | kg | | | |
7304.29.41 | 20 | Having a wall thickness of 12.7 mm or more | kg | | | |
7304.29.41 | 30 | Having a wall thickness less than 12.7 mm | kg | | | |
7304.29.41 | 40 | Having a wall thickness of 12.7 mm or more | kg | | | |
7304.29.41 | 50 | Having a wall thickness less than 12.7 mm | kg | | | |
7304.29.41 | 60 | Having a wall thickness of 12.7 mm or more | kg | | | |
7304.29.50 | | Of iron or nonalloy steel | | Free | | 25% |
7304.29.50 | 15 | Having a wall thickness not exceeding 9.5 mm | kg | | | |
7304.29.50 | 30 | Having a wall thickness exceeding 9.5 mm | kg | | | |
7304.29.50 | 45 | Having an outside diameter exceeding 114.3 mm but less than 215.9 mm | kg | | | |
7304.29.61 | | Of other alloy steel | | Free | | 35% |
7304.29.61 | 15 | Having a wall thickness not exceeding 9.5 mm | kg | | | |
7304.29.61 | 30 | Having a wall thickness exceeding 9.5 mm | kg | | | |
7304.29.61 | 45 | Having an outside diameter exceeding 114.3 mm but less than 215.9 mm | kg | | | |
7304.31 | | Other, of circular cross section, of iron or nonalloy steel: | | | | |
7304.31 | | Cold-drawn or cold-rolled (cold-reduced): | | | | |
7304.31.30 | 00 | Hollow bars | kg | Free | | 22% |
7304.31.60 | 10 | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters | kg | | | |
7304.39.00 | 02 | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters: | | | | |
7304.39.00 | 02 | Having an outside diameter less than 38.1 mm | kg | | | |
7304.39.00 | 04 | Having an outside diameter of 38.1 mm or more but less than 190.5 mm | kg | | | |
7304.39.00 | 28 | Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm | kg | | | |
7304.39.00 | 32 | Having a wall thickness exceeding 12.7 mm | kg | | | |
7304.39.00 | 36 | Having an outside diameter exceeding 114.3 mm but less than 190.5 mm: | | | | |
7304.39.00 | 36 | Having a wall thickness less than 12.7 mm | kg | | | |