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| Commodity | 2005 | 2006 | 2007 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $54,475 | $115,501 | $7,338 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $908,836 | $2,243,741 | $225,256 |
| Flanges of stainless steel | $83,706 | $78,194 | $65,493 |
| Threaded elbows, bends & sleeves of stainless steel | $313,545 | $877,345 | $566,866 |
| Butt welding fittings of stainless steel | $101,880 | $41,618 | $36,571 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $100,318 | $237,790 | $320,708 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | $155,863 | $240,340 | $1,486,009 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $1,806,729 | $292,408 | $1,538,354 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | $237,881 | $223,555 | $237,928 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $3,223,854 | $2,884,959 | $6,154,475 |
| Total | $6,987,087 | $7,235,451 | $10,638,998 |
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