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| Sub-Chapter | 2005 | 2007 | 2010 | 2011 |
| Sheet piling of iron or steel | | $4,009 | $53,837 | $35,916 |
| Railway or tramway track construction material of iron or steel | $10,871 | $14,726 | $614,997 | $355,867 |
| Tubes, pipes and hollow profiles, of cast iron. | $35,718 | $18,033 | $39,626 | $124,824 |
| Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) ... | $75,831 | $623,611 | $227,891 | $495,077 |
| Other tubes and pipes (for example, welded, riveted or similarly closed) | $674 | $20,727 | $163,708 | $199,339 |
| Other tubes, pipes and hollow profiles | $939,125 | $354,955 | $1,604,585 | $302,013 |
| Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or ... | $70,580 | $554,699 | $715,401 | $535,599 |
| Structures (excluding prefabricated buildings of heading 94.06) | $2,961,837 | $672,864 | $10,219,234 | $12,680,217 |
| Reservoirs, tanks, vats and similar containers for any material | $22,291 | $109,416 | $110,906 | $156,386 |
| Tanks, casks, drums, cans, boxes and similar containers, for any material | $38,518 | $97,527 | $158,731 | $62,628 |
| Containers for compressed or liquefied gas, of iron or steel. | $311,634 | $256,858 | $768,414 | $733,582 |
| Stranded wire, ropes, cables, plaited bands, slings and the like, of iron o ... | $100,057 | $130,930 | $81,005 | $384,948 |
| Barbed wire of iron or steel; twisted hoop or single flat wire, barbed or n ... | $3,554 | $5,508 | $505 | $30,139 |
| Cloth (including endless bands), grill, netting and fencing, of iron or ste ... | $32,652 | $62,309 | $152,337 | $199,395 |
| Chain and parts thereof, of iron or steel. | $56,120 | $281,382 | $765,372 | $398,045 |
| Nails, tacks, drawing pins, corrugated nails, staples | $33,641 | $217,557 | $463,737 | $472,922 |
| Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pin ... | $579,085 | $414,127 | $1,366,231 | $1,800,946 |
| Sewing needles, knitting needles, bodkins, crochet hooks, embroidery stilet ... | $754 | $537 | $9,683 | $5,293 |
| Springs and leaves for springs, of iron or steel. | $15,838 | $30,392 | $42,063 | $146,480 |
| Stoves, ranges, grates, cookers | $77,244 | $138,117 | $174,285 | $274,254 |
| Radiators for central heating, not electrically heated, and parts thereof | $8,208 | $8,518 | $36,361 | $191,894 |
| Table, kitchen or other household articles and parts thereof, of iron or st ... | $377,086 | $586,525 | $605,494 | $1,045,146 |
| Sanitary ware and parts thereof, of iron or steel. | $89,235 | $79,621 | $2,390,423 | $106,119 |
| Other cast articles of iron or steel. | $62 | $5,781 | $344,524 | $540,611 |
| Other articles of iron or steel. | $597,129 | $333,380 | $2,146,514 | $1,118,282 |
| Total | $6,437,744 | $5,022,109 | $23,255,864 | $22,395,922 |
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