Commodity200520062007200820092010
Line pipe of a kind used for oil/gas pipelines, having circular cross-secti ...$2,151$1,212$19,641$13,590$12,679$104,635
Casing of a kind used in drilling for oil/gas, having circular cross-sectio ... $1,871$4,176   
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ... $8,000    
Tubes & pipes (excl. of 7305.11-7305.20), having circular cross-sections, t ...  $3,863   
Tubes & pipes (e.g., welded/riveted/similarly closed), having circular cros ... $191$3,837$934$381$8,615
Total$2,151$11,274$31,517$14,524$13,060$113,250