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| Commodity | 2009 | 2010 | 2011 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $4,288 | $143,257 | $76,072 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $45,624 | $167,541 | $412,065 |
| Flanges of stainless steel | $21 | $1,519 | $3,553 |
| Threaded elbows, bends & sleeves of stainless steel | $536 | | $5,419 |
| Butt welding fittings of stainless steel | | $1,536 | $5,681 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $23,521 | $40,812 | $135,569 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | | $1,102 | $1,386 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $319 | $7,167 | $5,761 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | | $820 | $1,429 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | | $77,439 | $102,962 |
| Total | $74,309 | $441,193 | $749,897 |
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