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| Commodity | 2005 | 2006 | 2007 | 2008 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | | $2,415 | | $1,391 |
| Flanges of stainless steel | | $570 | $1,273 | $26,344 |
| Threaded elbows, bends & sleeves of stainless steel | | $222 | | |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | | $721 | | $670 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | | | | $741 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | | | | $30,478 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | | | $1,533 | $380 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $14,259 | $50 | $171,925 | $1,866 |
| Total | $14,259 | $3,978 | $174,731 | $61,870 |
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