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| Commodity | 2005 | 2007 | 2008 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $4,775,351 | $1,356,537 | $3,375,992 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $697,877 | $3,161,323 | $675,148 |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $1,963,320 | $3,402,216 | $11,588,931 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $678,402 | $68,525,753 | $34,594,887 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $751,626 | $2,594,972 | $1,476,641 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $3,091,631 | $2,880,737 | $6,128,306 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $19,288,796 | $11,953,700 | $17,047,745 |
| Total | $31,247,003 | $93,875,238 | $74,887,650 |
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