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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $117,961 | $61,650 | $62,471 | $65,185 | $224,952 | $187,915 |
| Articulated link chain other than roller chain, of iron/steel | $481,677 | $503,578 | $932,085 | $648,242 | $1,046,109 | $1,677,080 |
| Parts of articulated link chain of iron/steel | $210,229 | $173,080 | $224,577 | $213,669 | $145,257 | $48,651 |
| Skid chain of iron/steel | $9,060 | $33,123 | $10,648 | $6,817 | $26,809 | $32,570 |
| Stud-link chain of iron/steel | $23,846 | | $48,132 | $6,579 | $64,761 | $12,636 |
| Welded link chain of iron/steel | $21,866 | $22,700 | $17,521 | $58,633 | $149,124 | $257,021 |
| Chain, of iron/steel, n.e.s. in 73.15 | $47,677 | $133,777 | $234,732 | $186,940 | $104,761 | $107,630 |
| Parts of chains (excl. articulated link chain), of iron/steel | $1,375 | $27,448 | $34,910 | $3,211 | $84,462 | $173,372 |
| Total | $913,691 | $955,356 | $1,565,076 | $1,189,276 | $1,846,235 | $2,496,875 |
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