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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $17,256,508 | $58,671,139 | $5,247,566 | $16,744,124 | $7,797,946 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $5,048,477 | $3,487,664 | $1,728,928 | $659,705 | $3,727,537 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $9,357,107 | $15,456,975 | $463,333 | $2,770,198 | $20,430,832 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $487,503 | $1,611,981 | $7,836,710 | $2,661,662 | $1,593,161 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $180,366 | $116,549 | $1,302,311 | $202,049 | $29,440,461 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $355,563 | $1,132,251 | $1,331,266 | $76,637 | $377,258 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $9,870,002 | $25,266,619 | $19,751,619 | $7,058,883 | $29,148,978 |
| Total | $42,555,526 | $105,743,178 | $37,661,733 | $30,173,258 | $92,516,173 |
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