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| Commodity | 2006 | 2007 | 2008 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $3,917,452 | | $343,956 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $4,242,232 | $208,383 | $2,255,735 |
| Flanges of stainless steel | $20,240,610 | $21,229,337 | $36,322,118 |
| Threaded elbows, bends & sleeves of stainless steel | $9,339,238 | $10,718,605 | $26,623,702 |
| Butt welding fittings of stainless steel | $4,999,405 | | $2,271,222 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $44,085,029 | $35,696,151 | $46,899,790 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | $13,803,523 | $14,850,530 | $2,380,654 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $10,166,082 | $14,323,885 | $4,543,646 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | $5,183,502 | | $3,273,723 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $3,382,490 | $33,614,822 | $10,189,449 |
| Total | $119,359,563 | $130,641,713 | $135,103,995 |
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