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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $14,543 | $37,765 | $36,107 | $38,441 | $7,228 | $35,034 |
| Articulated link chain other than roller chain, of iron/steel | $28,106 | $92,918 | $71,239 | $18,347 | $29,228 | $45,916 |
| Parts of articulated link chain of iron/steel | $1,213 | $2,971 | $29,689 | $1,020 | $5,707 | $8,499 |
| Skid chain of iron/steel | $69,470 | $51,468 | $104,675 | $105,307 | $173,539 | $244,049 |
| Stud-link chain of iron/steel | | $76 | $1,770 | $129 | $918 | $472 |
| Welded link chain of iron/steel | $3,431 | $2,055 | $23,914 | $316,373 | $405,670 | $41,529 |
| Chain, of iron/steel, n.e.s. in 73.15 | $40,962 | $145,967 | $158,533 | $99,291 | $112,213 | $158,070 |
| Parts of chains (excl. articulated link chain), of iron/steel | $3,196 | $20,161 | $16,926 | $151,162 | $129,671 | $17,384 |
| Total | $160,921 | $353,381 | $442,853 | $730,070 | $864,174 | $550,953 |
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