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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $46,513 | $207,104 | | $140,390 | $251,707 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $154,677 | $30,634 | $47,405 | $513,169 | $960,758 |
| Flanges of stainless steel | $24,007 | $32,890 | $41,718 | $160,592 | $548,599 |
| Threaded elbows, bends & sleeves of stainless steel | $177,257 | $81,588 | $75,853 | $418,439 | $623,642 |
| Butt welding fittings of stainless steel | $13,367 | $12,521 | | $269 | $6,297 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $85,789 | $107,791 | $227,813 | $704,671 | $419,712 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | $64,332 | $74,019 | $150,418 | $198,803 | $578,575 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $144,365 | $56,210 | $301,009 | $2,076,475 | $5,446,934 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | | $11,608 | $45,602 | $144,861 | $267,247 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $3,100,237 | $1,016,373 | $1,018,069 | $4,883,477 | $6,607,275 |
| Total | $3,810,544 | $1,630,738 | $1,907,887 | $9,241,146 | $15,710,746 |
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