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| Commodity | 2005 | 2006 | 2007 | 2009 | 2011 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $55,964 | $2,589 | $7,920 | $22,189 | $23,645 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $5,630,706 | $5,662,424 | $7,396,683 | $7,110,300 | $5,068,453 |
| Flanges of stainless steel | | $475 | $5,639 | $2,879 | $15,974 |
| Threaded elbows, bends & sleeves of stainless steel | $1,202 | $68 | $6,428 | $22,757 | $14,510 |
| Butt welding fittings of stainless steel | $3,980 | $1,253 | $3,940 | $5,961 | $34,275 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $6,604 | $323 | $129,679 | $31,334 | $10,763 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | $982 | $6,101 | $10,212 | $3,142 | $3,631 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $4,221 | $29,057 | $22,318 | $31,972 | $2,731 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | $80,606 | $7,529 | $3,906 | $13,112 | $7,259 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $189,635 | $88,037 | $332,326 | $608,624 | $1,143,820 |
| Total | $5,973,900 | $5,797,856 | $7,919,051 | $7,852,270 | $6,325,061 |
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