Commodity2005200620072008200920102011
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ...  $2,548 $236,433 $653
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ...$31,928    $36,106 
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... $19,143$3,975   $13,036
Casing of a kind used in drilling for oil/gas, having circular cross-sectio ...$242  $189,289 $16,505 
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ...$13,757$76,427 $10,900  $128
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ...  $42,770$149,243 $375 
Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... $501$230 $324$107,311$18,024
Total$45,927$96,071$49,523$349,432$236,757$160,297$31,841