NAICS 331511 - Iron Foundries
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What is NAICS 331511
NAICS code 331511 covers establishments primarily engaged in iron foundry operations, where molten pig iron or iron alloys are poured into molds to produce cast iron castings. These castings include a diverse range of products such as manhole covers, pipes, skillets, and other durable iron components. Businesses in this sector specialize in transforming raw iron materials into finished or semi-finished cast iron products, serving both industrial and infrastructure needs. Government agencies contract with iron foundries to obtain customized, high-strength iron components that are essential for construction, public works, utilities, and transportation projects. The precision and durability of cast iron items make these foundries indispensable partners for federal, state, and local government infrastructure programs.
Industry Classification for NAICS 331511
This U.S. industry comprises establishments primarily engaged in pouring molten pig iron or iron alloys into molds to manufacture castings (e.g., cast iron manhole covers, cast iron pipe, cast iron skillets). Establishments in this industry purchase iron made in other establishments.
Breakdown for NAICS 331511
- Establishments engaged in molding molten pig iron or iron alloys into cast iron products.
- Includes manufacturing of cast iron items such as manhole covers, pipes, and cookware.
- Businesses purchase iron feedstock from separate iron production establishments.
- Typical size standards depend on employee count but generally include small to mid-sized manufacturing firms.
- Supports infrastructure, defense, and municipal needs with durable iron castings.
- Focuses on quality, precision, and compliance with government procurement regulations.
Included Activities for NAICS 331511
- Pouring molten pig iron or iron alloys into molds to form castings.
- Manufacturing cast iron manhole covers and pipe components.
- Producing cast iron cookware and industrial parts.
- Purchasing iron materials from external suppliers for casting processes.
- Performing quality control and testing of cast iron products.
- Customizing castings to meet government specifications and standards.
- Supporting infrastructure projects with durable iron components.
- Complying with environmental and safety regulations in foundry operations.
Business Types for NAICS 331511
- Iron foundry manufacturers
- Metal casting companies
- Industrial component fabricators
- Municipal infrastructure suppliers
- Defense subcontractors specializing in cast iron parts
- Small to medium manufacturing enterprises
Subcategories for NAICS 331511
- Cast iron brake shoes, railroad, manufacturing
- Cast iron pipe and pipe fittings manufacturing
- Cast iron railroad car wheels manufacturing
- Castings, compacted graphite iron, unfinished, manufacturing
- Castings, malleable iron, unfinished, manufacturing
- Castings, unfinished iron (e.g., ductile, gray, malleable, semisteel), manufacturing
- Cooking utensils, cast iron, manufacturing
- Ductile iron castings, unfinished, manufacturing
- Ductile iron foundries
- Fittings, soil and pressure pipe, cast iron, manufacturing
- Foundries, iron (i.e., ductile, gray, malleable, semisteel)
- Gray iron foundries
- Industrial molds, steel ingot, manufacturing
- Iron castings, unfinished, manufacturing
- Iron foundries
- Malleable iron foundries
- Manhole covers, cast iron, manufacturing
- Molds for casting steel ingots manufacturing
- Molds, steel ingot, industrial, manufacturing
- Pearlitic castings, malleable iron, unfinished, manufacturing
- Pipe and pipe fittings, cast iron, manufacturing
- Pipe couplings, cast iron, manufacturing
- Rolling mill rolls, iron, manufacturing
- Semisteel foundries
- Sewer pipe, cast iron, manufacturing
- Soil pipe, cast iron, manufacturing
- Water pipe, cast iron, manufacturing
Government Buyers for NAICS 331511
Government agencies such as the Department of Transportation, the Environmental Protection Agency, the Department of Defense, and municipal public works departments are primary buyers of iron foundry products. These agencies require cast iron components for infrastructure maintenance and development projects, including sewer systems, waterworks, roadways, and military applications. The durability and reliability of cast iron make it a preferred material for critical infrastructure elements, leading government buyers to rely on specialized iron foundries capable of meeting stringent quality and specification standards.
Contract Types & Procurement for NAICS 331511
Contracts in this sector typically include fixed-price, indefinite delivery/indefinite quantity (IDIQ), and firm-fixed-price agreements, often awarded through competitive bidding or negotiated procurement methods. Contract values vary widely depending on the scale and complexity of the casting requirements, ranging from small batch orders for municipal projects to large-scale contracts for federal infrastructure initiatives. Government contracting officers frequently seek suppliers with proven quality assurance processes and the ability to meet delivery schedules for critical infrastructure components.
Details for NAICS 331511
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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