Commodity2006200720082009
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ...$42,340$208,115$132,093$171,547
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ... $185,603$39,475$242,901
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ...$253,914$924,932$3,721$221,263
Casing of a kind used in drilling for oil/gas, having circular cross-sectio ...$469,879$803,093$2,897,250$4,966
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... $1,235 $243,805
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ...$13,903$48,853$205 
Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ...$883,042$424,678$100,413$37,777
Total$1,663,078$2,596,509$3,173,157$922,259