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| Commodity | 2005 | 2006 | 2008 | 2009 | 2010 | 2011 |
| Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... | $738,476 | $7,311,496 | | | | |
| Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... | | | $904 | | $4,489 | $1,096,634 |
| Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... | | | | $27,175 | | |
| Total | $738,476 | $7,311,496 | $904 | $27,175 | $4,489 | $1,096,634 |
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