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| Commodity | 2006 | 2007 | 2008 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $16,296 | $35,645 | $56,853 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $6,061 | $6,337 | $98,707 |
| Flanges of stainless steel | $3,381 | $9,304 | $6,581 |
| Threaded elbows, bends & sleeves of stainless steel | $783 | $425 | $8,501 |
| Butt welding fittings of stainless steel | $2,249 | $7,880 | $2,109 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $9,179 | $48,772 | $111,008 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | $10,224 | $52,879 | $70,713 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $152 | $4,748 | $8,521 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | $868 | $6,462 | $23,389 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $118,657 | $227,655 | $184,021 |
| Total | $167,850 | $400,107 | $570,403 |
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