Commodity2005200620072010
Line pipe (excl. seamless), of a kind used for oil/gas pipelines, of iron/s ... $26,985  
Casing & tubing of a kind used in drilling for oil/gas, of iron/steel$380,353$107,384 $248
Tubes, pipes & hollow profiles (excl. of 7306.10 & 7306.20), welded, of cir ...$1,219,546$3,012,664 $52,279
Tubes, pipes & hollow profiles (excl. of 7306.10-7306.30), welded, of circu ... $11,730 $11,883
Tubes, pipes & hollow profiles (excl. of 7306.10-7306.40), welded, of circu ...   $315,045
Tubes, pipes & hollow profiles (excl. of 7306.10-7306.50), welded, of non-c ...   $267,720
Tubes, pipes & hollow profiles of iron (excl. cast iron)/steel, n.e.s. (exc ...$16,130$24,482$48,765$6,661,159
Total$1,616,029$3,183,245$48,765$7,308,334