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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $10,231,192 | $670,438 | $1,887,518 | | $5,975,474 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $599,405 | $746,149 | $842,150 | | $3,553,604 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $975,482 | $568,155 | $435,370 | | $6,554,142 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $15,590,235 | $738,189 | $307,074 | | $1,112,001 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $75,071 | $14,566 | $1,048,960 | | |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $288,540 | $24,032 | $102,829 | | $4,072,272 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $26,131,951 | $85,841,704 | $114,659,073 | $68,769,153 | $22,103,761 |
| Total | $53,891,876 | $88,603,233 | $119,282,974 | $68,769,153 | $43,371,254 |
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