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| Commodity | 2005 | 2006 | 2007 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $5,425 | $4,785 | $4,453 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $53,900 | $33,590 | $422,787 |
| Flanges of stainless steel | $134,336 | $120,768 | $165,323 |
| Threaded elbows, bends & sleeves of stainless steel | $85,254 | $153,470 | $218,497 |
| Butt welding fittings of stainless steel | $32,046 | $50,693 | $158,633 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $424,751 | $487,089 | $707,471 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | $27,944 | $228,644 | $125,915 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $145,735 | $44,352 | $261,912 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | $17,224 | $37,657 | $81,024 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $2,079,596 | $468,896 | $1,695,757 |
| Total | $3,006,211 | $1,629,944 | $3,841,772 |
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