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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $1,171,362 | $1,360,768 | $1,309,822 | $1,785,435 | $1,362,489 | $4,180,701 | $6,783,481 |
| Articulated link chain other than roller chain, of iron/steel | $5,883,002 | $5,780,999 | $5,933,181 | $6,168,527 | $4,990,614 | $4,984,708 | $6,684,989 |
| Parts of articulated link chain of iron/steel | $488,241 | $1,281,772 | $2,998,399 | $2,503,078 | $319,704 | $380,014 | $788,364 |
| Skid chain of iron/steel | $3,759,583 | $3,115,189 | $1,773,442 | $1,009,550 | $1,435,733 | $1,882,909 | $1,940,588 |
| Stud-link chain of iron/steel | | | $9,490 | $806 | $1,739 | | $16,121 |
| Welded link chain of iron/steel | $111,976 | $271,122 | $108,907 | $84,002 | $20,731 | $64,148 | $198,005 |
| Chain, of iron/steel, n.e.s. in 73.15 | $330,161 | $376,436 | $325,328 | $372,443 | $249,361 | $226,787 | $216,358 |
| Parts of chains (excl. articulated link chain), of iron/steel | $150,242 | $293,274 | $318,698 | $411,370 | $540,476 | $209,579 | $120,629 |
| Total | $11,894,567 | $12,479,560 | $12,777,267 | $12,335,211 | $8,920,847 | $11,928,846 | $16,748,535 |
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