North American Industry Classification System (NAICS) 2002
- 31-33 - Manufacturing
- 331 - Primary Metal 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 ManufacturingUS
- 331222 - Steel Wire DrawingUS
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