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| Sub-Chapter | 2005 | 2006 | 2010 |
| Sheet piling of iron or steel | $1,245,108 | $166,742 | $5,485,181 |
| Railway or tramway track construction material of iron or steel | $75,753,846 | $8,457,491 | $60,009,782 |
| Tubes, pipes and hollow profiles, of cast iron. | $580,043 | $1,230,108 | $1,508,902 |
| Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) ... | $128,357,245 | $31,329,812 | $188,062,793 |
| Other tubes and pipes (for example, welded, riveted or similarly closed) | $521,019,375 | $410,967,319 | $325,680,156 |
| Other tubes, pipes and hollow profiles | $73,339,368 | $30,694,567 | $147,010,592 |
| Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or ... | $99,005,927 | $19,118,174 | $136,127,504 |
| Structures (excluding prefabricated buildings of heading 94.06) | $8,154,283 | $6,104,237 | $42,634,835 |
| Reservoirs, tanks, vats and similar containers for any material | $14,574,538 | $32,530 | $24,198,133 |
| Tanks, casks, drums, cans, boxes and similar containers, for any material | $10,462,579 | $593,310 | $5,198,587 |
| Containers for compressed or liquefied gas, of iron or steel. | $19,002,116 | $8,105,905 | $163,930,328 |
| Stranded wire, ropes, cables, plaited bands, slings and the like, of iron o ... | $14,636,358 | $9,301,428 | $28,046,130 |
| Barbed wire of iron or steel; twisted hoop or single flat wire, barbed or n ... | $611 | $33,053 | $890,216 |
| Cloth (including endless bands), grill, netting and fencing, of iron or ste ... | $3,439,151 | $1,795,407 | $8,719,443 |
| Chain and parts thereof, of iron or steel. | $9,073,733 | $5,379,766 | $16,537,823 |
| Anchors, grapnels and parts thereof, of iron or steel. | $37,736 | $30,216 | $78,508 |
| Nails, tacks, drawing pins, corrugated nails, staples | $1,042,535 | $669,037 | $1,239,064 |
| Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pin ... | $42,559,570 | $19,643,823 | $87,699,691 |
| Sewing needles, knitting needles, bodkins, crochet hooks, embroidery stilet ... | $971,280 | $669,326 | $1,381,873 |
| Springs and leaves for springs, of iron or steel. | $3,891,896 | $671,024 | $4,678,588 |
| Stoves, ranges, grates, cookers | $16,011,400 | $4,398,487 | $42,275,310 |
| Radiators for central heating, not electrically heated, and parts thereof | $880,442 | $24,061 | $8,980,625 |
| Table, kitchen or other household articles and parts thereof, of iron or st ... | $7,679,057 | $4,134,511 | $50,132,796 |
| Sanitary ware and parts thereof, of iron or steel. | $716,140 | $578,378 | $9,301,413 |
| Other cast articles of iron or steel. | $2,602,317 | $1,779,806 | $8,188,336 |
| Other articles of iron or steel. | $16,916,018 | $4,781,726 | $58,915,743 |
| Total | $1,071,952,672 | $570,690,244 | $1,426,912,352 |
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