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| Sub-Chapter | 2005 | 2006 | 2007 | 2008 |
| Sheet piling of iron or steel | $436,244 | $309,261 | $240,775 | $215,632 |
| Railway or tramway track construction material of iron or steel | $30,763 | $10,500 | $140,478 | $9,756 |
| Tubes, pipes and hollow profiles, of cast iron. | $25,790 | $36,920 | $39,348 | $125,232 |
| Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) ... | $2,282,398 | $99,584 | $192,710 | $388,592 |
| Other tubes and pipes (for example, welded, riveted or similarly closed) | $16,372 | $1,049 | $132,434 | $5,223,702 |
| Other tubes, pipes and hollow profiles | $56,113 | $201,915 | $510,549 | $1,531,281 |
| Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or ... | $402,197 | $255,460 | $228,944 | $352,176 |
| Structures (excluding prefabricated buildings of heading 94.06) | $2,223,434 | $2,135,733 | $3,708,584 | $2,876,253 |
| Reservoirs, tanks, vats and similar containers for any material | $162,432 | $35,096 | $505,247 | $357,032 |
| Tanks, casks, drums, cans, boxes and similar containers, for any material | $531,171 | $259,524 | $385,789 | $330,860 |
| Containers for compressed or liquefied gas, of iron or steel. | $238,841 | $250,162 | $258,478 | $192,049 |
| Stranded wire, ropes, cables, plaited bands, slings and the like, of iron o ... | $511,945 | $318,610 | $364,194 | $485,444 |
| Barbed wire of iron or steel; twisted hoop or single flat wire, barbed or n ... | $91,326 | $234,928 | $186,562 | $1,013,127 |
| Cloth (including endless bands), grill, netting and fencing, of iron or ste ... | $460,506 | $442,760 | $658,050 | $869,352 |
| Chain and parts thereof, of iron or steel. | $138,257 | $49,460 | $122,792 | $170,448 |
| Anchors, grapnels and parts thereof, of iron or steel. | $41,879 | $13,282 | $100,347 | $59,445 |
| Nails, tacks, drawing pins, corrugated nails, staples | $61,552 | $41,577 | $73,304 | $34,067 |
| Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pin ... | $114,753 | $299,865 | $368,203 | $287,794 |
| Sewing needles, knitting needles, bodkins, crochet hooks, embroidery stilet ... | $6,957 | $48,089 | $19,222 | $15,105 |
| Springs and leaves for springs, of iron or steel. | $59,107 | $40,318 | $39,378 | $43,292 |
| Stoves, ranges, grates, cookers | $1,164,053 | $1,261,984 | $1,799,614 | $3,035,100 |
| Radiators for central heating, not electrically heated, and parts thereof | $43,538 | $43,938 | $99,274 | $114,054 |
| Table, kitchen or other household articles and parts thereof, of iron or st ... | $476,895 | $443,025 | $674,622 | $875,028 |
| Sanitary ware and parts thereof, of iron or steel. | $17,350 | $55,220 | $61,183 | $35,849 |
| Other cast articles of iron or steel. | $102,193 | $261,383 | $276,534 | $244,257 |
| Other articles of iron or steel. | $331,883 | $805,713 | $1,636,866 | $1,468,533 |
| Total | $10,027,949 | $7,955,356 | $12,823,481 | $20,353,460 |
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