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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $245,102,587 | $246,008,322 | $265,171,221 | $335,393,489 | $264,280,234 | $341,246,719 | $411,357,200 |
| Articulated link chain other than roller chain, of iron/steel | $24,309,661 | $37,689,581 | $26,066,082 | $20,658,925 | $12,247,602 | $17,411,638 | $25,712,394 |
| Parts of articulated link chain of iron/steel | $22,489,740 | $25,202,417 | $20,558,266 | $30,316,653 | $28,801,758 | $50,004,659 | $64,509,467 |
| Skid chain of iron/steel | $33,980 | $842,650 | $931,741 | $1,180,209 | $502,744 | $332,786 | $70,166 |
| Stud-link chain of iron/steel | $3,020,313 | $16,126,972 | $21,489,250 | $14,394,507 | $12,979,994 | $5,951,904 | $3,206,344 |
| Welded link chain of iron/steel | $5,798,106 | $9,094,740 | $6,252,012 | $7,381,279 | $6,442,764 | $8,026,616 | $11,439,855 |
| Chain, of iron/steel, n.e.s. in 73.15 | $9,193,344 | $13,269,565 | $10,995,146 | $15,331,723 | $11,512,144 | $9,830,203 | $11,509,494 |
| Parts of chains (excl. articulated link chain), of iron/steel | $1,466,816 | $1,187,843 | $1,331,291 | $1,784,058 | $1,275,358 | $5,974,266 | $6,136,659 |
| Total | $311,414,547 | $349,422,090 | $352,795,009 | $426,440,843 | $338,042,598 | $438,778,791 | $533,941,579 |
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