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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $429,802 | $783,979 | $1,061,187 | $1,043,158 | $610,697 | $432,678 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $219,480 | $598,403 | $919,119 | $379,541 | $331,300 | $222,914 |
| Flanges of stainless steel | $30,840 | $97,327 | $176,281 | $71,835 | $37,859 | $53,407 |
| Threaded elbows, bends & sleeves of stainless steel | $96,309 | $178,873 | $216,418 | $94,847 | $46,677 | $84,990 |
| Butt welding fittings of stainless steel | $129,059 | $121,417 | $242,295 | $198,095 | $124,389 | $81,443 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $149,321 | $245,186 | $299,947 | $262,326 | $115,408 | $119,999 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | $38,808 | $71,508 | $175,102 | $164,020 | $70,023 | $123,973 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $31,230 | $46,702 | $134,159 | $46,565 | $53,371 | $75,217 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | $70,916 | $112,860 | $298,018 | $104,834 | $136,632 | $79,629 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $201,232 | $367,023 | $532,486 | $760,068 | $666,466 | $594,402 |
| Total | $1,396,997 | $2,623,278 | $4,055,012 | $3,125,289 | $2,192,822 | $1,868,652 |
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