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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $7,273,461 | $6,880,148 | $8,654,081 | $10,416,507 | $8,431,361 | $10,713,892 | $11,064,040 |
| Articulated link chain other than roller chain, of iron/steel | $331,333 | $805,217 | $1,610,577 | $1,483,060 | $2,085,374 | $2,117,318 | $529,487 |
| Parts of articulated link chain of iron/steel | $292,140 | $223,527 | $248,364 | $818 | $68,402 | $258,256 | $982,846 |
| Skid chain of iron/steel | $10,510 | $9,999 | $11,927 | $32,610 | $14,588 | $158,120 | $42,164 |
| Stud-link chain of iron/steel | $477 | $209,375 | $182,893 | $311,022 | $415,100 | $362,087 | $321,579 |
| Welded link chain of iron/steel | $59,238 | $123,346 | $159,775 | $185,634 | $219,249 | $184,194 | $324,985 |
| Chain, of iron/steel, n.e.s. in 73.15 | $719,488 | $169,774 | $442,152 | $526,978 | $259,704 | $164,364 | $804,536 |
| Parts of chains (excl. articulated link chain), of iron/steel | $294 | $34,074 | $46,526 | $15,717 | $61,550 | $246,395 | $1,241,737 |
| Total | $8,686,941 | $8,455,460 | $11,356,295 | $12,972,346 | $11,555,328 | $14,204,626 | $15,311,374 |
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