NAICS 331511 - Iron Foundries RFPs, RFIs, RFQs, Sources Sought and Government Contracting Opportunities

Browse open Iron Foundries (NAICS 331511) RFPs, RFIs, RFQs, and Sources Sought on Bidscope. We aggregate active government contracting opportunities from federal, state, and local agencies, refreshed daily so you never miss a bid. Click any opportunity below for full solicitation details, due dates, and contacts.

About Iron Foundries (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.

StatusTitleBuyerDue Date
OpenMetal Shop Supplies for Southern Columbia Area

Southern Columbia Area is seeking bids for metal shop supplies including layout fluid, abrasives, drill bits, welding consumables, foundry materials, and various metal stock for the 2019-2020 school year.

Columbia County, PA, USAInvitation for/to Bid (IFB/ITB)
Southern Columbia Area School District-
OpenCut Steel and Various Metals Price Agreement

Dallas College is seeking suppliers to provide cut steel and various metal products on an as-needed basis for instructional programs and minor building repairs across all Dallas College locations under a five-year price agreement.

Dallas County, TX, USAInvitation for/to Bid (IFB/ITB)
Dallas College9/16/2026
OpenDuctile Iron Water Main Supply and Delivery

Louisville Water Company is seeking bids for the purchase and delivery of various sizes of ductile iron water mains.

Louisville, KY, USAInvitation for/to Bid (IFB/ITB)Minority-Owned Business
Louisville Water Company9/23/2026
OpenMetal Fabrication and Welding Services

Jefferson County is seeking a contractor to provide on-site and off-site welding and metal fabrication services, including MIG, TIG, and arc welding, bending, forming, rolling, polishing, and custom metal cutting for county departments.

195 Arsenal Street, Watertown, NY, USAInvitation for/to Bid (IFB/ITB)
Jefferson County > Purchasing Department9/23/2026
OpenNon-Galvanized Steel Pipe Supply

Hydro-Quebec is requesting proposals for the supply of non-galvanized steel pipes for the Monteregie/Pierre-Laporte region, with an estimated contract value of $1 million to $3 million including options.

Quebec, CanadaRequest for Proposal (RFP)
Hydro-Quebec9/18/2026
OpenMetal Pipe Assemblies

The Defense Logistics Agency is requesting 11 metal pipe assemblies under NSN 4710-01-528-5678, with potential one-year automated indefinite-delivery contracting and electronic quote submission.

United StatesRequest for Quote/Qualifications (RFQ)Small Business
United States of America > DEPT OF DEFENSE > DEFENSE LOGISTICS AGENCY > DLA LAND AND MARITIME (MARITIME SUPPLY CHAIN)9/14/2026
OpenOther Manufacturing Technologies

The National Science Foundation is seeking proposals for research and development in other manufacturing technologies through its Small Business Innovation Research program.

United StatesRequest for Proposal (RFP)
United States of America > NATIONAL SCIENCE FOUNDATION7/7/2027
OpenMetal Tube Assemblies

The U.S. Navy is soliciting offers for metal tube assemblies under solicitation N0038326QMB25.

Philadelphia, PA, USARequest for Quote/Qualifications (RFQ)
United States of America > DEPT OF DEFENSE > DEPT OF THE NAVY > NAVSUP WEAPON SYSTEMS SUPPORT (PHILADELPHIA)9/18/2026
OpenMetal Tube Assemblies

The Defense Logistics Agency is requesting 1,082 metal tube assemblies under NSN 4710-014-746-198, with potential one-year automated indefinite-delivery contracting and electronic quote submission.

United StatesRequest for Quote/Qualifications (RFQ)
United States of America > DEPT OF DEFENSE > DEFENSE LOGISTICS AGENCY > DLA LAND AND MARITIME (MARITIME SUPPLY CHAIN)9/14/2026
OpenIndustrial Pipe, Fittings, and Equipment Supply

The City of Phoenix Public Works Department is seeking a supplier for as-needed industrial pipe, miscellaneous fittings, equipment, glue, and hand tools under a three-year contract with two one-year options.

200 West Washington Street, Phoenix, AZ, USAInvitation for/to Bid (IFB/ITB)
Ridgefield > Public Works Department9/30/2026
OpenSheet Metal Supply

The Defense Logistics Agency is requesting a quote for 283 sheets of metal under NSN 9535-00-232-6878, delivered to DLA Distribution Puget Sound.

McChord AFB, WA, USARequest for Quote/Qualifications (RFQ)Small Business
United States of America > DEPT OF DEFENSE > DEFENSE LOGISTICS AGENCY > DLA TROOP SUPPORT (CONSTRUCTION & EQUIPMENT [METALS])9/14/2026
OpenLock and Dam 21 Bolted Tainter Gate Fabrication

The U.S. Army Corps of Engineers is seeking fabrication and delivery of new bolted Tainter gates for Mississippi River Basin Lock and Dam 21 in Quincy, Illinois.

Quincy, IL, USARequest for Proposal (RFP)
United States of America > DEPT OF DEFENSE > DEPT OF THE ARMY > W07V ENDIST ROCK ISLAND (KO CONTRACTING DIVISION)9/17/2026
OpenManufacture of 8-Inch Pipe

The Department of the Navy is seeking a small business to manufacture 2,244 inches of 8-inch Schedule 40 pipe to MIL-DTL-32386, with delivery to Kittery, Maine.

Kittery, ME, USARequest for Proposal (RFP)Small Business
United States of America > DEPT OF DEFENSE > DEPT OF THE NAVY > NAVSUP WEAPON SYSTEMS SUPPORT MECH (NAVSUP WSS MECHANICSBURG)9/24/2026
OpenBent Metallic Tubes

The Defense Logistics Agency is seeking quotes for eight bent metallic tubes under NSN 4710-00-280-0227, with delivery to DLA Distribution Warner Robins.

Robins Air Force Base, Robins AFB, GA, USARequest for Quote/Qualifications (RFQ)Woman-Owned Business
United States of America > DEPT OF DEFENSE > DEFENSE LOGISTICS AGENCY > DLA LAND AND MARITIME (FLUID HANDLING DIVISION)9/21/2026
OpenSheet Metal Supply

The Defense Logistics Agency is seeking quotes from small businesses for 9 sheets of metal under NSN 9535-002-777-429, delivered to DLA Distribution Warner Robins within 167 days after order.

Warner Robins, GA, USARequest for Quote/Qualifications (RFQ)Small Business
United States of America > DEPT OF DEFENSE > DEFENSE LOGISTICS AGENCY > DLA TROOP SUPPORT (CONSTRUCTION & EQUIPMENT MRO SVC I)9/14/2026
OpenFerrous and Nonferrous Metal Sales

The City of Laval is seeking bids for the sale of ferrous and nonferrous metals under a 60-month contract.

3131 BOUL. Saint-Martin O, Laval, QC, CanadaRequest for Proposal (RFP)
Laval10/8/2026
OpenMetal Tube Assemblies

The Defense Logistics Agency is requesting an electronic quote for 13 metal tube assemblies identified by NSN 4710-01-245-2233 for delivery to DLA Distribution.

Defense Distribution Depot Susquehanna, Fairview, PA, USARequest for Quote/Qualifications (RFQ)
United States of America > DEPT OF DEFENSE > DEFENSE LOGISTICS AGENCY > DLA LAND AND MARITIME (FLUID HANDLING DIVISION)9/21/2026
OpenMetal Tube Assemblies

The Defense Logistics Agency is requesting two metal tube assemblies under a total small-business set-aside for delivery to DLA Distribution Depot Oklahoma.

Oklahoma, USARequest for Quote/Qualifications (RFQ)Small Business
United States of America > DEPT OF DEFENSE > DEFENSE LOGISTICS AGENCY > DLA LAND AND MARITIME (FLUID HANDLING DIVISION)9/14/2026
OpenSteel Pipe Supply

The U.S. Army Corps of Engineers, Memphis District is requesting quotes for steel pipe under a total small business set-aside.

167 N Main, Memphis, TN, USARequest for Quote/Qualifications (RFQ)Small Business
United States of America > DEPT OF DEFENSE > DEPT OF THE ARMY > W07V ENDIST MEMPHIS (KO CONTRACTING DIVISION)10/1/2026
OpenOperations Division Machining Services and Materials BPA

The U.S. Army Corps of Engineers, New Orleans District, is seeking a small business to provide machining, repair, fabrication, transportation, and related materials under a five-year blanket purchase agreement.

7400 Leake Avenue, New Orleans, LA, USARequest for Quote/Qualifications (RFQ)Small Business
United States of America > DEPT OF DEFENSE > DEPT OF THE ARMY > W07V ENDIST NEW ORLEANS (KO CONTRACTING DIVISION)9/17/2026
OpenNonmetallic Rods

The Defense Logistics Agency is requesting a quote for 34 nonmetallic rods under NSN 9390-01-222-2128, with delivery to DLA Distribution Puget Sound within 160 days after order.

McChord AFB, WA, USARequest for Quote/Qualifications (RFQ)Small Business
United States of America > DEPT OF DEFENSE > DEFENSE LOGISTICS AGENCY > DLA TROOP SUPPORT (CONSTRUCTION & EQUIPMENT [MAT & ME])9/21/2026
OpenHot-Rolled Steel Flat Bar

Clinton Community College is seeking sealed bids for 1,440 hot-rolled steel flat bars in three specified sizes, including delivery and unloading to its manufacturing institute.

53 Clinton Point Drive, Plattsburgh, NY, USARequest for Proposal (RFP)Woman-Owned Business
Clinton Community College9/25/2026
OpenWelding Department Metal Supplies

The Southern Alberta Institute of Technology is seeking vendors to supply various shapes and sizes of mild steel, aluminum, and stainless steel for its Welding Department under a 35-month contract.

Southern Alberta Institute of Technology (SAIT), Calgary, AB, CanadaRequest for Proposal (RFP)
University of Alberta9/23/2026
OpenSupply of Valves and Fittings

Newfoundland and Labrador Hydro is seeking suppliers for a standing offer arrangement covering the supply of valves and fittings.

Newfoundland and Labrador, CanadaInvitation for/to Bid (IFB/ITB)
Newfoundland and Labrador Hydro10/5/2026
OpenCustom ARMCO Pure-Iron Parts

Oak Ridge National Laboratory is seeking custom-machined ARMCO pure-iron parts with electropolishing, heat treatment, nickel plating, and powder coating for its Neutron Technologies Division.

Oak Ridge, TN, USARequest for Proposal (RFP)
United States of America > ENERGY, DEPARTMENT OF > ORNL UT-BATTELLE LLC-DOE CONTRACTOR (Oak Ridge National Laboratory)9/21/2026
Frequently Asked Questions
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What is NAICS code 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.

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