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| Commodity | 2005 | 2006 | 2010 |
| Roller chain of iron/steel | $3,574 | $10,667 | $31,314 |
| Articulated link chain other than roller chain, of iron/steel | $5,204 | $37,472 | $28,343 |
| Parts of articulated link chain of iron/steel | $28,788 | $1,262 | $13 |
| Skid chain of iron/steel | | $92 | $65 |
| Stud-link chain of iron/steel | | | $680 |
| Welded link chain of iron/steel | $1,517 | $255 | $25,850 |
| Chain, of iron/steel, n.e.s. in 73.15 | $5,658 | $7,300 | $138,538 |
| Parts of chains (excl. articulated link chain), of iron/steel | $11,236 | $119,428 | $18,202 |
| Total | $55,977 | $176,476 | $243,005 |
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