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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $186,019 | $60,391 | $250,120 | $188,727 | $93,977 | $210,437 | $265,333 |
| Articulated link chain other than roller chain, of iron/steel | $775,156 | $3,366,955 | $434,674 | $766,701 | $267,942 | $281,549 | $323,284 |
| Parts of articulated link chain of iron/steel | $172,503 | $24,446 | $204,507 | $107,590 | $138,759 | $326,426 | $85,052 |
| Skid chain of iron/steel | $15,731,213 | $16,744,236 | $17,168,882 | $15,981,066 | $7,344,977 | $9,660,595 | $17,143,631 |
| Stud-link chain of iron/steel | $213,600 | $287,258 | $1,088,828 | $3,058,426 | $778,506 | $2,056,128 | $2,598,936 |
| Welded link chain of iron/steel | $1,751,718 | $2,718,214 | $3,246,969 | $3,478,610 | $3,073,362 | $3,062,357 | $5,384,784 |
| Chain, of iron/steel, n.e.s. in 73.15 | $6,661,536 | $5,224,841 | $9,350,779 | $9,745,104 | $6,923,110 | $7,607,046 | $6,511,217 |
| Parts of chains (excl. articulated link chain), of iron/steel | $9,575,188 | $8,750,172 | $9,168,261 | $6,523,437 | $5,106,373 | $5,219,069 | $6,281,288 |
| Total | $35,066,933 | $37,176,513 | $40,913,020 | $39,849,661 | $23,727,006 | $28,423,607 | $38,593,525 |
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