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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... | $10,168,000 | $11,328,000 | $58,522,000 | $88,634,000 | $2,992,000 | $3,126,000 | $8,753,000 |
| Casing & tubing of a kind used in drilling for oil/gas, of iron/steel | $50,000 | | | $19,152,000 | | $210,000 | |
| Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ... | $40,490,000 | $54,800,000 | $67,977,000 | $83,374,000 | $49,997,000 | $57,936,000 | $66,212,000 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... | $26,843,000 | $29,431,000 | $36,580,000 | $36,221,000 | $25,783,000 | $34,546,000 | $41,883,000 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ... | $2,376,000 | | $2,943,000 | $3,959,000 | $2,454,000 | $1,518,000 | $1,372,000 |
| Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ... | $54,591,000 | $72,275,000 | $85,994,000 | $95,416,000 | $42,265,000 | $53,323,000 | $72,908,000 |
| Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ... | $2,003,000 | $4,088,000 | $5,322,000 | $5,293,000 | $3,158,000 | $6,111,000 | $5,606,000 |
| Total | $136,521,000 | $171,922,000 | $257,338,000 | $332,049,000 | $126,649,000 | $156,770,000 | $196,734,000 |
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