Commodity2005200620072008200920102011
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ...$49,197$25,107$2,569$14,128$500,009  
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ...$1,786  $122   
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... $43,653$73,511$592$7,779  
Casing of a kind used in drilling for oil/gas, having circular cross-sectio ...     $17,194 
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ...$376,904$28,289$124,330$168,839$4,302$6,632$648,191
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ...$632$31,172$11,620$8,082 $2,480$235,094
Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ...$356$44,835$6,077$2,062$4,013 $8,059
Total$428,875$173,056$218,107$193,825$516,103$26,306$891,344