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| Commodity | 2005 | 2006 | 2010 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of non-malleable ... | $114,587 | $20,751 | $42,119 |
| Cast tube/pipe fittings (e.g., couplings, elbows, sleeves) of iron (excl. n ... | $1,721,572 | $797,557 | $893,323 |
| Flanges of stainless steel | $9,618 | $17,161 | $10,932 |
| Threaded elbows, bends & sleeves of stainless steel | $13,728 | $84,675 | $16,823 |
| Butt welding fittings of stainless steel | $31,723 | $185 | $14,462 |
| Tube/pipe fittings of stainless steel (excl. of 7307.21-7307.23) | $66,708 | $449,942 | $26,220 |
| Flanges of iron/steel (excl. of cast iron/stainless steel) | $12,570 | $7,376 | $17,372 |
| Threaded elbows, bends & sleeves of iron/steel (excl. of cast iron/stainles ... | $20,871 | $10,489 | $18,630 |
| Butt welding fittings of iron/steel (excl. of cast iron/stainless steel) | | $3,091 | $833 |
| Tube/pipe fittings of iron/steel (excl. cast iron/stainless steel; excl. of ... | $812,171 | $331,548 | $421,811 |
| Total | $2,803,548 | $1,722,775 | $1,462,525 |
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