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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $5,576,306 | $78,532,399 | $86,055,552 | | | $58,245,673 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $2,187,405 | $744,932 | $40,198,872 | $3,492,004 | | $16,547,487 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $8,395,400 | $18,568,547 | $68,524,885 | | | $25,109,898 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $5,807,119 | $51,851,026 | $109,184,166 | $12,570,149 | | $18,544,023 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $577,886 | $2,432,791 | $23,470,441 | | $12,110,099 | $4,212,539 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $2,787,592 | $5,550,431 | $1,536,561 | | $2,703,164 | $5,183,206 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $71,727,995 | $97,999,126 | $224,902,956 | $14,579,218 | $8,722,610 | $118,660,682 |
| Total | $97,059,703 | $255,679,252 | $553,873,433 | $30,641,371 | $23,535,873 | $246,503,508 |
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