Establishments primarily engaged in marketing semifinished metal products, except precious metals. Establishments in this industry may operate with warehouses (metals service centers) or without warehouses (metals sales offices). Establishments primarily engaged in marketing precious metals are classified in Industry 5094.
| Aluminum bars, rods, ingots, sheets, pipes, plates, etc.—wholesale | Pipe and tubing, steel—wholesale |
| Anode metal—wholesale | Pipe, cast iron—wholesale |
| Bale ties, wire—wholesale | Plates, metal—wholesale |
| Bars, metal—wholesale | Rails and accessories—wholesale |
| Bearing piles, iron and steel—wholesale | Reinforcement mesh, wire—wholesale |
| Black plate, iron and steel—wholesale | Rods, metal—wholesale |
| Castings, rough iron and steel—wholesale | Sheets, galvanized or other coated—wholesale |
| Concrete reinforcing bars—wholesale | Sheets, metal—wholesale |
| Copper sheets, plates, bars, rods, pipes, etc.—wholesale | Steel—wholesale |
| Ferroalloys—wholesale | Strip, metal—wholesale |
| Forgings, ferrous—wholesale | Structural shapes, iron and steel—wholesale |
| Forms, concrete construction steel—wholesale | Terneplate—wholesale |
| Foundry products—wholesale | Tin and tin base metals, shapes, forms, etc.—wholesale |
| Ingots—wholesale | Tin plate bars—wholesale |
| Iron and steel flat products—wholesale | Tin plate—wholesale |
| Iron and steel semifinished products—wholesale | Track spikes—wholesale |
| Lead—wholesale | Tubing, metal—wholesale |
| Mercury—wholesale | Wire rods—wholesale |
| Metals, except precious—wholesale | Wire rope or cable, not insulated—wholesale |
| Nails—wholesale | Wire screening—wholesale |
| Nonferrous metal, except precious e.g. sheets, bars, rods—wholesale | Wire, not insulated—wholesale |
| Pig iron—wholesale | Zinc—wholesale |
| Piling, iron and steel—wholesale | |
| Codes |
Titles | Total Marketable US Businesses |
| 50510000 | Metals service centers and offices | 1,266 |
| 50510100 | Metal wires, ties, cables, and screening | 381 |
| 50510101 | Bale ties, wire | 11 |
| 50510102 | Cable, wire | 127 |
| 50510103 | Reinforcement mesh, wire | 17 |
| 50510104 | Rods, wire (not insulated) | 4 |
| 50510105 | Rope, wire (not insulated) | 95 |
| 50510106 | Wire screening | 9 |
| 50510107 | Wire, nec | 71 |
| 50510200 | Iron and steel (ferrous) products | 1,009 |
| 50510201 | Bearing piles, iron or steel | 11 |
| 50510202 | Black plate, iron or steel | 7 |
| 50510203 | Cast iron pipe | 39 |
| 50510204 | Castings, rough: iron or steel | 101 |
| 50510205 | Concrete reinforcing bars | 23 |
| 50510206 | Ferroalloys | 32 |
| 50510207 | Ferrous metals | 99 |
| 50510208 | Forgings, ferrous | 27 |
| 50510209 | Forms, concrete construction (steel) | 62 |
| 50510210 | Iron or steel flat products | 70 |
| 50510211 | Iron or steel semifinished products | 43 |
| 50510212 | Pig iron | 10 |
| 50510213 | Piling, iron and steel | 15 |
| 50510214 | Pipe and tubing, steel | 835 |
| 50510215 | Rails and accessories | 48 |
| 50510216 | Steel | 6,745 |
| 50510217 | Structural shapes, iron or steel | 149 |
| 50510218 | Terneplate | 0 |
| 50510219 | Track spikes | 1 |
| 50510220 | Steel decking | 19 |
| 50510300 | Copper products | 42 |
| 50510301 | Copper | 65 |
| 50510302 | Copper sheets, plates, bars, rods, pipes, etc., nec | 17 |
| 50510400 | Miscellaneous nonferrous products | 138 |
| 50510401 | Anode metal | 6 |
| 50510402 | Lead | 62 |
| 50510403 | Mercury | 2 |
| 50510404 | Nonferrous metal sheets, bars, rods, etc., nec | 95 |
| 50510405 | Tin and tin base metals, shapes, forms, etc., nec | 13 |
| 50510406 | Tin plate | 8 |
| 50510408 | Zinc | 17 |
| 50519901 | Aluminum bars, rods, ingots, sheets, pipes, plates, etc. | 568 |
| 50519902 | Bars, metal | 56 |
| 50519903 | Foundry products | 134 |
| 50519904 | Ingots | 10 |
| 50519905 | Nails | 217 |
| 50519906 | Plates, metal | 35 |
| 50519907 | Rods, metal | 23 |
| 50519908 | Sheets, galvanized or other coated | 18 |
| 50519909 | Sheets, metal | 173 |
| 50519910 | Strip, metal | 7 |
| 50519911 | Tubing, metal | 68 |
| 50519912 | Stampings, metal | 44 |
