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| Commodity | 2005 | 2006 | 2007 | 2008 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $88,553 | $77 | $37,649 | $6,354 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | | $87 | | |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | | | | $1,081 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $5,247 | $6,676 | | $13,683 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $25,098 | $216,640 | $53,390 | $200,107 |
| Total | $118,898 | $223,480 | $91,039 | $221,225 |
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