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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | $49,695 | | $2,760,584 | |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $325,108 | | | | $46,423,614 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | | | $2,318,900 | $3,917,464 | $46,888,070 |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | | | | $1,657,415 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | | $1,687,857 | $827,798 | $471,654 | $995,914 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | $197,798 | $1,325,315 | $721,696 | $470,905 | $8,306,504 |
| Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... | $281,237 | $588,291 | | $620,167 | $2,036,223 |
| Total | $804,143 | $3,651,158 | $3,868,394 | $8,240,774 | $106,307,740 |
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