NAICS 331513 - Steel Foundries (except Investment)
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What is NAICS 331513
NAICS code 331513 covers establishments primarily engaged in manufacturing steel castings, excluding investment castings. These businesses specialize in producing a wide range of steel cast components used in heavy machinery, automotive parts, construction equipment, and infrastructure projects. Steel foundries under this code typically purchase raw steel from other manufacturers and transform it into custom or standardized castings through various melting, molding, and finishing processes. Government agencies contract with these foundries to ensure a reliable supply of high-quality steel castings critical for defense systems, transportation infrastructure, and public works projects. This sector plays a vital role in supporting industrial and military supply chains by delivering durable and precision-engineered steel components.
Industry Classification for NAICS 331513
This U.S. industry comprises establishments primarily engaged in manufacturing steel castings (except steel investment castings). Establishments in this industry purchase steel made in other establishments.
Breakdown for NAICS 331513
- Manufactures steel castings excluding investment castings.
- Purchases raw steel from other manufacturers for processing.
- Supports heavy industry, defense, and infrastructure sectors.
- Subject to specific size standards for small business classification.
- Produces custom and standardized cast steel components.
- Engages in melting, molding, and finishing steel castings.
Included Activities for NAICS 331513
- Melting and pouring steel into molds.
- Designing and fabricating casting molds.
- Finishing and machining steel castings to specifications.
- Conducting quality control and material testing.
- Supplying steel castings for military and infrastructure use.
- Customizing castings based on client engineering requirements.
- Handling logistics and delivery for government contracts.
Business Types for NAICS 331513
- Steel casting manufacturers
- Heavy industrial foundries
- Defense subcontractors
- Infrastructure component suppliers
- Small and medium-sized foundries
- Custom metal casting shops
Subcategories for NAICS 331513
- Alloy steel castings (except investment), unfinished, manufacturing
- Cast steel railroad car wheels, unfinished, manufacturing
- Castings, steel (except investment), unfinished, manufacturing
- Foundries, steel (except investment)
- Rolling mill rolls, steel, manufacturing
- Stainless steel castings (except investment), unfinished, manufacturing
- Steel castings (except investment), unfinished, manufacturing
- Steel foundries (except investment)
Government Buyers for NAICS 331513
Federal, state, and local government agencies commonly purchase steel castings from foundries classified under NAICS 331513. Key buyers include the Department of Defense, Department of Transportation, and agencies involved in infrastructure development and maintenance. These agencies require steel castings for military vehicles, weapon systems, bridges, highways, and water treatment facilities. The reliability, strength, and precision of steel castings make them essential for public safety and operational performance. Contracting with specialized foundries ensures adherence to strict quality standards and timely delivery, supporting critical government projects and national security interests.
Contract Types & Procurement for NAICS 331513
Contracts for steel foundry services under NAICS 331513 often include firm-fixed-price contracts, indefinite delivery/indefinite quantity (IDIQ) agreements, and requirements contracts. Procurement methods may involve competitive bidding, negotiated contracts, or set-asides for small businesses when applicable. Contract values can vary widely, from smaller orders for replacement parts to multimillion-dollar agreements for large infrastructure or defense projects. Government contracts typically emphasize compliance with material specifications, testing standards, and delivery schedules. Long-term contracts are common to secure steady supply and support maintenance and modernization efforts.
Details for NAICS 331513
Explore the hierarchy and related codes for this industry
| NAICS Code | Industry Title |
|---|---|
| 33151 | Ferrous Metal Foundries |
| 3315 | Foundries |
| 331 | Primary Metal Manufacturing |
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