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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | | | $988,000 | | | $64,000 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | $1,275,000 | $568,000 | $7,181,000 | $106,000 | $8,000 | $19,000 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $378,000 | $990,000 | $117,000 | $1,802,000 | $40,391,000 | $36,879,000 | $95,000 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $1,967,000 | $3,478,000 | $1,558,000 | $4,492,000 | $1,034,000 | $1,806,000 | $391,000 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $867,000 | $735,000 | $965,000 | $1,159,000 | $667,000 | $789,000 | $484,000 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $1,090,000 | $221,000 | $167,000 | | $157,000 | $617,000 | $144,000 |
| Total | $4,302,000 | $6,699,000 | $3,375,000 | $15,622,000 | $42,355,000 | $40,099,000 | $1,197,000 |
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