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| Commodity | 2005 | 2006 | 2007 | 2008 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $80,122 | $132,689 | $127,267 | $26,130 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $6,383 | $19,230 | $17,124 | $91,420 |
| Flanges of stainless steel | $110,911 | $26,645 | $21,062 | $20,141 |
| Threaded elbows, bends & sleeves of stainless steel | $2,975 | $49,495 | $27,825 | $16,345 |
| Butt welding fittings of stainless steel | | $4,975 | | $5,479 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $61,936 | $9,041 | $61,034 | $67,514 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | $35,933 | $34,834 | $36,763 | $196,996 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $13,015 | $3,328 | $20,504 | $67,197 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | $16,858 | $9,854 | $3,507 | $2,257 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $905,927 | $566,643 | $255,610 | $1,547,531 |
| Total | $1,234,060 | $856,734 | $570,696 | $2,041,010 |
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