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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | $24 | | | |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | | | | $10,595 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | $70 | | $355,015 | $17,995 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $348,417 | $81,474 | $47,259 | $310,047 | $1,193,161 |
| Total | $348,417 | $81,568 | $47,259 | $665,062 | $1,221,751 |
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