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| Sub-Chapter | 2005 | 2007 | 2008 | 2009 | 2010 |
| Sheet piling of iron or steel | $5,115 | $261,686 | $2,020 | $21,682 | |
| Railway or tramway track construction material of iron or steel | $113,497 | $107,759 | $174,263 | $105,274 | $2,767 |
| Tubes, pipes and hollow profiles, of cast iron. | $1,000,023 | $133,672 | $2,011,017 | $2,137,998 | $524,639 |
| Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) ... | $212,477 | $593,485 | $435,504 | $616,090 | $607,431 |
| Other tubes and pipes (for example, welded, riveted or similarly closed) | $754,838 | $152,426 | $172,021 | $35,585 | $190,333 |
| Other tubes, pipes and hollow profiles | $1,262,836 | $2,788,858 | $3,347,627 | $2,130,064 | $4,330,225 |
| Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or ... | $2,309,090 | $2,591,413 | $2,305,020 | $2,404,441 | $6,688,123 |
| Structures (excluding prefabricated buildings of heading 94.06) | $8,552,424 | $20,519,655 | $43,336,844 | $26,570,771 | $19,913,949 |
| Reservoirs, tanks, vats and similar containers for any material | $819,021 | $3,478,483 | $1,182,765 | $2,386,336 | $1,896,858 |
| Tanks, casks, drums, cans, boxes and similar containers, for any material | $1,184,880 | $1,441,918 | $1,880,196 | $1,021,173 | $1,015,385 |
| Containers for compressed or liquefied gas, of iron or steel. | $1,840,516 | $1,027,746 | $1,470,656 | $2,346,245 | $2,140,003 |
| Stranded wire, ropes, cables, plaited bands, slings and the like, of iron o ... | $66,270 | $356,382 | $377,354 | $218,825 | $388,930 |
| Barbed wire of iron or steel; twisted hoop or single flat wire, barbed or n ... | $231 | $2,597 | $8,897 | $26,379 | $117,207 |
| Cloth (including endless bands), grill, netting and fencing, of iron or ste ... | $297,154 | $1,438,518 | $919,353 | $1,158,237 | $1,150,244 |
| Chain and parts thereof, of iron or steel. | $334,966 | $560,825 | $743,716 | $1,104,569 | $1,363,292 |
| Anchors, grapnels and parts thereof, of iron or steel. | $31,942 | $32,507 | $4,159 | $123,143 | $2,032 |
| Nails, tacks, drawing pins, corrugated nails, staples | $285,003 | $185,978 | $646,514 | $620,122 | $571,638 |
| Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pin ... | $1,141,633 | $2,593,065 | $3,027,960 | $4,154,804 | $4,847,034 |
| Sewing needles, knitting needles, bodkins, crochet hooks, embroidery stilet ... | $2,948 | $6,262 | $6,979 | $7,693 | $24,664 |
| Springs and leaves for springs, of iron or steel. | $219,521 | $207,947 | $351,596 | $230,553 | $360,078 |
| Stoves, ranges, grates, cookers | $229,552 | $348,368 | $316,447 | $758,798 | $738,811 |
| Radiators for central heating, not electrically heated, and parts thereof | $1,047 | $8,750 | $2,032 | $96 | $7,210 |
| Table, kitchen or other household articles and parts thereof, of iron or st ... | $1,225,794 | $2,426,797 | $4,275,365 | $3,938,011 | $4,178,028 |
| Sanitary ware and parts thereof, of iron or steel. | $134,261 | $151,662 | $119,468 | $242,058 | $132,699 |
| Other cast articles of iron or steel. | $480,743 | $28,972 | $166,538 | $413,806 | $681,061 |
| Other articles of iron or steel. | $3,692,087 | $4,961,769 | $6,256,404 | $10,056,481 | $18,476,615 |
| Total | $26,197,869 | $46,407,500 | $73,540,715 | $62,829,234 | $70,349,256 |
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