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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $7,530,190 | $6,548,190 | $6,696,053 | $7,365,495 | $4,092,773 | $5,473,624 | $7,137,296 |
| Articulated link chain other than roller chain, of iron/steel | $1,408,777 | $832,232 | $1,213,994 | $1,364,891 | $1,085,364 | $1,447,833 | $1,450,745 |
| Parts of articulated link chain of iron/steel | $184,471 | $116,785 | $298,247 | $330,393 | $319,249 | $226,733 | $117,809 |
| Skid chain of iron/steel | | $9,950 | $8,578 | $12,189 | $39,887 | $8,972 | $18,263 |
| Stud-link chain of iron/steel | | | $2,923 | $706 | | $745 | $38,440 |
| Welded link chain of iron/steel | $2,994 | | $3,532 | $12,305 | $14,802 | $33,518 | $43,123 |
| Chain, of iron/steel, n.e.s. in 73.15 | $97,299 | $73,992 | $35,773 | $29,796 | $36,663 | $66,160 | $22,388 |
| Parts of chains (excl. articulated link chain), of iron/steel | $43,102 | $2,236 | $5,111 | $1,928 | $9,968 | $21,895 | $21,788 |
| Total | $9,266,833 | $7,583,385 | $8,264,211 | $9,117,703 | $5,598,706 | $7,279,480 | $8,849,852 |
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