Federal NAICS Codes

NAICS 331511

Iron Foundries

Explore obligations, trends, recent awards, and incumbent contractors for NAICS 331511.

NAICS 331511 federal market metrics

Total obligations
$12.9M
Total awards
743 awards
Active obligations
$307.7K
Size standard
1,000 employees

What this NAICS covers

NAICS 331511 covers melting and casting ferrous metal into shaped gray or ductile iron castings, including pattern preparation, mold making, core production, melting, pouring, cleaning, fettling, and basic heat treatment for cast iron components.

Federal opportunities under 331511 typically involve producing cast iron components to engineering drawings and material specifications, supplying dimensional inspection reports, chemical and mechanical test certificates, established melt traceability, and recurring production runs with agreed acceptance criteria and delivery schedules.

FY2025 snapshot

Obligations
$153.5K
Awards
10
Average award
$15.3K
Change from FY2024
-48.7%

Recent awards

Search contractors

$109,148

OLYMPIC FOUNDRY INC

National Oceanic and Atmospheric Administration

PIID
1305M326F0043
PSC
2040 - MARINE HARDWARE AND HULL ITEMS

$15,101

CHAND, L.L.C.

Defense Logistics Agency

PIID
SPE7L526V0490
PSC
4730 - HOSE, PIPE, TUBE, LUBRICATION, AND RAILING FITTINGS

$67,703

TRANSAERO, INC.

Defense Logistics Agency

PIID
SPE7M326P0029
PSC
4730 - HOSE, PIPE, TUBE, LUBRICATION, AND RAILING FITTINGS

$115,740

TRANSAERO, INC.

Defense Logistics Agency

PIID
SPE7M326P0032
PSC
4730 - HOSE, PIPE, TUBE, LUBRICATION, AND RAILING FITTINGS

$26,680

MCGARD, LLC

Department of the Air Force

PIID
FA940125P0054
PSC
5340 - HARDWARE, COMMERCIAL

$26,214

TRANSDIGM INC

Defense Logistics Agency

PIID
SPE7L125V034A
PSC
4730 - HOSE, PIPE, TUBE, LUBRICATION, AND RAILING FITTINGS

$3,759

TRANSDIGM INC

Defense Logistics Agency

PIID
SPE4A625PT562
PSC
4730 - HOSE, PIPE, TUBE, LUBRICATION, AND RAILING FITTINGS

FAQ

What work fits NAICS 331511?
  • Contract production of gray or ductile iron housings and structural castings delivered to engineering drawing tolerances.
  • Pattern and core production tied to a contract with storage and tooling preservation requirements.
  • Supply of replacement iron castings for legacy equipment requiring matching metallurgy and specified heat treatment.
  • Delivery of cleaned, fettled castings with documented dimensional inspection and nondestructive testing per contract acceptance criteria.
When is NAICS 331511 a weak fit?
  • Nonferrous metal casting (aluminum, bronze) where the work requires nonferrous metallurgy and casting processes not present in iron foundries.
  • Primary metal production and steelmaking where the activity is smelting, refining, or rolling steel rather than casting iron components.
  • Machine shop or metal fabrication contracts focused on primary machining, welding, or assembly of fabricated parts without melting and casting operations.
What solicitation language points to NAICS 331511?
  • Engineering drawings calling out gray iron or ductile iron grades with required chemical and mechanical properties and referenced casting standards.
  • Requirement for melt or heat-lot traceability, material test reports, and certified test certificates for each casting lot.
  • Acceptance testing language specifying radiography, magnetic particle, hardness checks, dimensional inspection, or other foundry-specific nondestructive examinations.

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