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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $23,096,810 | $28,888,409 | $33,466,644 | $37,730,357 | $32,222,297 | $30,848,787 | $33,975,187 |
| Articulated link chain other than roller chain, of iron/steel | $7,526,461 | $6,335,314 | $7,374,909 | $9,674,010 | $9,943,842 | $9,716,966 | $11,221,546 |
| Parts of articulated link chain of iron/steel | $2,333,249 | $2,326,341 | $1,998,988 | $4,033,296 | $3,054,721 | $3,835,754 | $4,595,337 |
| Skid chain of iron/steel | $1,653,835 | $3,007,373 | $4,183,704 | $4,959,897 | $2,683,427 | $3,697,556 | $4,794,059 |
| Stud-link chain of iron/steel | $6,498,479 | $6,326,825 | $9,300,030 | $8,760,015 | $15,234,099 | $11,800,010 | $22,640,292 |
| Welded link chain of iron/steel | $11,795,472 | $11,628,037 | $19,061,307 | $18,268,803 | $15,480,116 | $11,198,789 | $14,057,427 |
| Chain, of iron/steel, n.e.s. in 73.15 | $10,581,478 | $7,739,734 | $13,508,464 | $18,618,864 | $21,918,930 | $12,587,116 | $16,960,472 |
| Parts of chains (excl. articulated link chain), of iron/steel | $1,684,266 | $1,383,345 | $1,550,998 | $2,542,182 | $2,918,836 | $2,566,139 | $3,643,293 |
| Total | $65,170,050 | $67,635,378 | $90,445,044 | $104,587,424 | $103,456,268 | $86,251,117 | $111,887,613 |
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