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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2011 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $388,138 | $316,819 | $208,717 | $870,035 | $443,181 | $583,075 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $353,384 | $383,726 | $670,911 | $1,033,170 | $687,348 | $763,542 |
| Flanges of stainless steel | $14,170 | $67,292 | $160,013 | $139,346 | $123,034 | $73,388 |
| Threaded elbows, bends & sleeves of stainless steel | $177,637 | $263,388 | $210,523 | $265,564 | $225,464 | $117,953 |
| Butt welding fittings of stainless steel | $40,054 | $49,088 | $299,657 | $236,220 | $175,974 | $243,952 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $293,961 | $202,666 | $395,555 | $365,164 | $381,728 | $302,774 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | $98,624 | $109,660 | $299,932 | $240,392 | $249,891 | $217,299 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $140,947 | $197,610 | $250,806 | $414,667 | $371,533 | $351,806 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | $118,478 | $190,203 | $595,544 | $336,784 | $316,521 | $159,053 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $361,434 | $406,610 | $500,271 | $996,994 | $504,083 | $518,294 |
| Total | $1,986,827 | $2,187,062 | $3,591,929 | $4,898,336 | $3,478,757 | $3,331,136 |
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