NAICS 331511: Iron Foundries
Iron Foundries is NAICS code 331511. A business is small under it with 1,000 employees or fewer. No federal contracts are open under this code right now.
- SBA size standard
- 1,000 employees or fewer
- Open contracts now
- 0
- Federal spending, FY2025
- $161,608
- Share won by small businesses
- 87%
What NAICS 331511 covers
The Census Bureau's NAICS index lists these kinds of work under 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
- 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
- Malleable iron foundries
- Manhole covers, cast iron, manufacturing
The index lists 26 entries for this code in all.
Read the full definition, including what's excluded, on census.gov.
SBA size standard for 331511
To count as a small business for a contract assigned NAICS 331511, your business must have 1,000 employees or fewer. Employees are averaged over the last 24 months.
From SBA's table of size standards, effective Mar 17, 2023. Confirm it with SBA's size standards tool before you certify your size.
Who buys iron foundries
Agencies that awarded the most under NAICS 331511 over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Defense Logistics Agency | $356,879 |
| National Oceanic and Atmospheric Administration | $262,765 |
| Department of the Air Force | $102,930 |
| Department of the Navy | $45,500 |
| Department of Veterans Affairs | $28,098 |
Federal spending under 331511 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $313,874 |
| FY2025 | $161,608 |
| FY2026 | $320,690 |
| FY2027 (so far) | $0 |
Source: USAspending.gov, all contract awards with this NAICS code. Fiscal years start October 1.
Related NAICS codes
- 331512 Steel Investment Foundries
- 331513 Steel Foundries (except Investment)
- 331523 Nonferrous Metal Die-Casting Foundries
- 331524 Aluminum Foundries (except Die-Casting)
- 331529 Other Nonferrous Metal Foundries (except Die-Casting)
Frequently asked questions
What is NAICS code 331511?
331511 is the 2022 NAICS code for Iron Foundries. The Census Bureau's index lists work such as cast iron brake shoes, railroad, manufacturing, cast iron pipe and pipe fittings manufacturing, cast iron railroad car wheels manufacturing under it. Federal contracting uses the 2022 codes.
What is the SBA size standard for NAICS 331511?
1,000 employees or fewer. A business at or under that is small for contracts assigned this code. The current SBA table took effect Mar 17, 2023.
Are there government contracts for iron foundries?
None are open on SAM.gov right now, but new notices post daily. You can set up a free alert for this code.
How do I add NAICS code 331511 to my SAM.gov registration?
Update your entity registration on SAM.gov and add the code on the Goods and Services page, in the Assertions section. You can list several NAICS codes and mark one as your primary. Changes are free.
Keep going
- Search other NAICS codes by keyword or company
- How to choose NAICS codes for government contracts
- NAICS codes with the most open federal contracts
FedReady is an independent company, not affiliated with SBA, SAM.gov, the Census Bureau or any government agency. Open-contract counts come from SAM.gov and update daily; spending figures come from USAspending.gov.