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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $6,445 | $12,157 | $35,454 | $8,847 | $9,964 | $148,653 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $75,823 | $115,630 | $229,581 | $114,138 | $263,589 | $270,948 |
| Flanges of stainless steel | $8,807 | $73,436 | $103,699 | $104,576 | $52,868 | $292,529 |
| Threaded elbows, bends & sleeves of stainless steel | $13,538 | $150,260 | $185,644 | $205,425 | $94,883 | $445,635 |
| Butt welding fittings of stainless steel | $24 | $7,068 | $2,587 | $886 | $59 | $30,098 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $23,820 | $221,829 | $322,963 | $132,861 | $172,346 | $566,132 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | $52,119 | $238,373 | $454,548 | $184,195 | $239,876 | $636,266 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $85,234 | $544,201 | $826,597 | $696,600 | $538,690 | $1,102,790 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | $37 | $7,518 | $56,081 | $29,046 | $1,278 | $40,011 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $400,657 | $1,110,864 | $2,177,523 | $1,822,659 | $2,818,691 | $1,611,176 |
| Total | $666,504 | $2,481,336 | $4,394,677 | $3,299,233 | $4,192,244 | $5,144,238 |
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