Find Vetted Casting & Extrusion Suppliers.Before the RFQ.
Browse verified foundries and extruders for investment castings, stainless parts and custom aluminum profiles. No account needed to start. Every supplier is screened before it shows up in search.
Free to search, free to send RFIs. No seat limits.
What Are You Casting or Extruding?
Pick a process to see vetted foundries and extruders that run it today. Public profiles show what they make and where, so you can shortlist before you send an RFI.
Investment Casting
Lost-wax castings for complex, near-net-shape parts with fine detail.
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Stainless Steel Investment Casting
Corrosion-resistant castings for pump, valve, food and medical equipment.
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Aluminum Extrusion
Custom and standard aluminum profiles for frames, rails and heat sinks.
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Die Casting
High-volume aluminum and zinc die casting for housings and brackets.
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Sand & Permanent Mold Casting
Larger castings and lower volumes in iron, steel and aluminum.
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Machining & Finishing
Post-cast machining, fabrication and anodize so parts ship ready to use.
View suppliersFrom Search to Shortlist in Three Steps.
Start looking right now. Create a free account only when you find suppliers worth a closer look.
Browse Public Profiles
Search vetted suppliers by capability, certification and region. See who fits before you commit any time.
Unlock Full Profiles
Sign up free to see complete supplier pages: equipment, capacity, certification details and contact options.
Send a Structured RFI
Reach out to the suppliers you choose with one clear RFI. Confirm fit first, then move to the RFQ.
See Enough to Shortlist. Sign Up to See Everything.
Public profiles give you a fast read on fit. A free buyer account opens the full picture.
A Quick Read on Fit
Enough to know if a supplier belongs on your list.
- Core capabilities and processes
- Region and industries served
- Verified supplier badge
- Equipment, capacity and certification details
- Messaging and RFIs
The Whole Picture
Everything you need to qualify faster, at no cost.
- Complete supplier pages and data
- Equipment, capacity and certifications (ISO, IATF, AS9100D, NADCAP)
- Send structured RFIs and message suppliers directly
- Metal price, labor and energy indexes
- No seat limits, no fees, no commission
Every Supplier Is Screened Before You See Them.
No pay-to-list directory, no self-reported claims taken at face value. Our team reviews each shop before its profile goes live.
Our ISO-based screening gives you a head start. It complements your own supplier qualification process, so your team starts further along, not from scratch.
Certifications Confirmed
Quality system credentials checked and cross-referenced, not just claimed.
Capability & Capacity Checked
Equipment, processes and real production scale reviewed against what the shop says it runs.
Business Legitimacy Verified
A real company with a real track record, ready to work with.
Built for Industrial Buyers.
Procurement and engineering teams use TandemOne to find foundries and extruders, qualify second sources and bring production closer to home.
Pump & Valve
Cast housings, impellers and bodies.
Automotive
Die cast and investment cast parts.
Aerospace
Investment castings and NADCAP processes.
Industrial Equipment
Extruded frames and cast components.
Energy
Castings and extruded enclosures.
I feel very confident about working with suppliers on TandemOne, based on their pre-vetting process. It removes the uncertainty that typically slows things down.
Xintianjian Tech · Manufacturing Partner
Before You Start Searching.
Do I need an account to browse suppliers?
No. Public supplier profiles are open to anyone. Create a free buyer account when you want full supplier pages, details and the ability to send RFIs.
Is it really free for buyers?
Yes. Searching, viewing full profiles, sending RFIs and messaging suppliers cost buyers nothing. There are no seat limits.
Can I find suppliers who cast or extrude and also machine?
Yes. Profiles list each supplier's processes, so you can find foundries and extruders that also machine and finish, and send fewer parts between shops.
Are you a broker or middleman?
No. We verify suppliers and then step aside. You deal with suppliers directly, own the relationship and we never take a cut of the deal.
What is an RFI, and why send one before an RFQ?
An RFI is a structured request for information covering capability, capacity and fit. It lets you confirm a real match before asking for pricing, so the RFQs you do send go to the right shops.
Your Next Foundry or Extruder Is Already Here.
Browse vetted casting and extrusion suppliers now. Create a free buyer account when you're ready to see full profiles and send RFIs.