Variant of NAICS 1997 - Goods and services
- 331 - Primary Metal Manufacturing
- 3311 - Iron and Steel Mills and Ferro-Alloy Manufacturing
- 33111 - Iron and Steel Mills and Ferro-Alloy Manufacturing
- 331110 - Iron and Steel Mills and Ferro-Alloy Manufacturing
- 3312 - Steel Product Manufacturing from Purchased Steel
- 33121 - Iron and Steel Pipes and Tubes Manufacturing from Purchased Steel
- 331210 - Iron and Steel Pipes and Tubes Manufacturing from Purchased Steel
- 33122 - Rolling and Drawing of Purchased Steel
- 331221 - Cold-Rolled Steel Shape Manufacturing
- 331222 - Steel Wire Drawing
- 3313 - Alumina and Aluminum Production and Processing
- 33131 - Alumina and Aluminum Production and Processing
- 331313 - Primary Production of Alumina and Aluminum
- 331317 - Aluminum Rolling, Drawing, Extruding and Alloying
- 3314 - Non-Ferrous Metal (except Aluminum) Production and Processing
- 33141 - Non-Ferrous Metal (except Aluminum) Smelting and Refining
- 331410 - Non-Ferrous Metal (except Aluminum) Smelting and Refining
- 33142 - Copper Rolling, Drawing, Extruding and Alloying
- 331420 - Copper Rolling, Drawing, Extruding and Alloying
- 33149 - Non-Ferrous Metal (except Copper and Aluminum) Rolling, Drawing, Extruding and Alloying
- 331490 - Non-Ferrous Metal (except Copper and Aluminum) Rolling, Drawing, Extruding and Alloying
- 3315 - Foundries
- 33151 - Ferrous Metal Foundries
- 331511 - Iron Foundries
- 331514 - Steel Foundries
- 33152 - Non-Ferrous Metal Foundries
- 331523 - Non-Ferrous Die-Casting Foundries
- 331529 - Non-Ferrous Foundries (except Die-Casting)
- 331 - Primary Metal Manufacturing
- 3311 - Iron and Steel Mills and Ferro-Alloy Manufacturing
- 33111 - Iron and Steel Mills and Ferro-Alloy Manufacturing
- 331110 - Iron and Steel Mills and Ferro-Alloy Manufacturing
- 3312 - Steel Product Manufacturing from Purchased Steel
- 33121 - Iron and Steel Pipes and Tubes Manufacturing from Purchased Steel
- 331210 - Iron and Steel Pipes and Tubes Manufacturing from Purchased Steel
- 33122 - Rolling and Drawing of Purchased Steel
- 331221 - Cold-Rolled Steel Shape Manufacturing
- 331222 - Steel Wire Drawing
- 3313 - Alumina and Aluminum Production and Processing
- 33131 - Alumina and Aluminum Production and Processing
- 331313 - Primary Production of Alumina and Aluminum
- 331317 - Aluminum Rolling, Drawing, Extruding and Alloying
- 3314 - Non-Ferrous Metal (except Aluminum) Production and Processing
- 33141 - Non-Ferrous Metal (except Aluminum) Smelting and Refining
- 331410 - Non-Ferrous Metal (except Aluminum) Smelting and Refining
- 33142 - Copper Rolling, Drawing, Extruding and Alloying
- 331420 - Copper Rolling, Drawing, Extruding and Alloying
- 33149 - Non-Ferrous Metal (except Copper and Aluminum) Rolling, Drawing, Extruding and Alloying
- 331490 - Non-Ferrous Metal (except Copper and Aluminum) Rolling, Drawing, Extruding and Alloying
- 3315 - Foundries
- 33151 - Ferrous Metal Foundries
- 331511 - Iron Foundries
- 331514 - Steel Foundries
- 33152 - Non-Ferrous Metal Foundries
- 331523 - Non-Ferrous Die-Casting Foundries
- 331529 - Non-Ferrous Foundries (except Die-Casting)
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