NAICS 331511: Iron Foundries
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.
- NAICS code
- 331511
- Title
- Iron Foundries
- Sector
- 31-33 Manufacturing
- Subsector
- 331 Primary Metal Manufacturing
- Industry group
- 3315 Foundries
- NAICS industry
- 33151 Ferrous Metal Foundries
- SBA size standard
- 1,000 employees
- Open bids on BidRover
- 0
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What is NAICS code 331511?
NAICS 331511 is "Iron Foundries" in the 2022 North American Industry Classification System, in sector 31-33 (Manufacturing). 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.
What is the SBA size standard for NAICS 331511?
A business is small under NAICS 331511 at or below 1,000 employees, including affiliates (13 CFR 121.201). Confirm the standard named in each solicitation.
How many government bids are open under NAICS 331511?
No open bid in BidRover cites NAICS 331511 right now. Many state and local notices do not list a NAICS code, so a keyword alert for this work catches more of them.
How do I get alerts for NAICS 331511 bids?
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Title and definition: U.S. Census Bureau, North American Industry Classification System (NAICS), 2022. Size standard: U.S. Small Business Administration, Small Business Size Standards, 13 CFR 121.201 (eCFR text as of Oct 21, 2026). Bid counts come from official public sources and refresh every hour; confirm the code and size standard in each solicitation.