Choosing a sheet metal fabrication partner in the United States is a high-stakes decision. The wrong choice costs more than money. It costs rework, missed deadlines, and sometimes a delayed product launch.
I researched over 25 U.S.-based sheet metal fabrication companies for this guide. I cross-referenced data from The Fabricator's FAB 40 list, SEC filings, industry market reports, and direct company disclosures. Then I scored each company on eight weighted criteria that matter to OEM engineers and procurement teams.
The result is a ranked list of the 10 best sheet metal fabrication service providers in the USA — with transparent methodology, verifiable data, and honest trade-offs for each company.
How I Selected These Companies
I used a structured evaluation process with data from multiple independent sources.
Data Sources
- The Fabricator FAB 40[^1] (2023–2025 editions) — the most recognized revenue-based ranking of U.S. contract fabricators
- SEC filings for publicly traded companies (MEC, Xometry)
- Industry reports from Research and Markets and Technavio
- B2B directories including IQS Directory, ThomasNet, and MFG.com
- Company websites, LinkedIn profiles, and press releases
- Customer reviews and engineering community feedback
Scoring Framework
Each company was scored 1–10 across eight dimensions. Here is the framework:
| Dimension | Weight | What I Assessed |
|---|---|---|
| Scale & Market Coverage | 20% | Revenue, facility count, geographic reach, employee count |
| Product Line Completeness | 15% | Range of fabrication processes (cutting, forming, welding, finishing, assembly) |
| Certifications & Compliance | 15% | ISO 9001[^2], AS9100D, ITAR, ISO 13485, CMMC, UL certifications |
| Client Reputation & Reviews | 15% | FAB 40 rank, customer testimonials, OEM partnerships, industry awards |
| Industry Influence | 10% | Trade show activity, media coverage, association involvement |
| Supply Chain Capability | 10% | Lead times, MOQ flexibility, DFM support, digital quoting |
| Digital Presence & Accessibility | 10% | Online quoting, website quality, communication responsiveness |
| Geographic Relevance | 5% | Multi-location coverage, shipping logistics, nearshore options |
I grouped the final results into three tiers:
- Tier 1 — Industry Leaders (Score 9–10)
- Tier 2 — Strong Contenders (Score 7–8)
- Tier 3 — Noteworthy Specialists (Score 7)
Note: Most companies on this list are privately held. Revenue figures are estimates based on the best available data. Independent verification is limited for private firms.
Quick Comparison Table
Here is every company at a glance. Use this to shortlist before reading the detailed profiles.
| Rank | Company | HQ Location | Founded | Est. Revenue | Employees | Score | Best For |
|---|---|---|---|---|---|---|---|
| 1 | Mayville Engineering (MEC) | Milwaukee, WI | 1945 | $582M (2024) | 2,200+ | 9/10 | High-volume OEM production |
| 2 | Cadrex Manufacturing | Romeoville, IL | 1976 | ~$480M | 2,000+ | 9/10 | Data center & ICT hardware |
| 3 | BTD Manufacturing | Detroit Lakes, MN | 1979 | ~$296–364M | 1,300+ | 8/10 | Precision fabrication + tool & die |
| 4 | O'Neal Manufacturing (OMS) | Vestavia Hills, AL | 1921 | ~$234–285M | 1,100+ | 8/10 | Heavy industrial repetitive parts |
| 5 | Ironform Corporation | Chicago, IL | 2013 | ~$210–240M | 900+ | 8/10 | Heavy stamping + transportation |
| 6 | PEKO Precision Products | Rochester, NY | 1966 | Not disclosed | 400+ | 8/10 | Defense, medical, semiconductor |
| 7 | Anchor Fabrication | Fort Worth, TX | 1990 | ~$54–100M+ | 500+ | 7/10 | Heavy fab in South/Central U.S. |
| 8 | Maysteel Industries | Allenton, WI | 1936 | ~$140–180M | ~900 | 7/10 | Enclosures & infrastructure |
| 9 | Xometry | North Bethesda, MD | 2013 | $513M (2024) | 1,000+ (corp) | 7/10 | On-demand digital ordering |
| 10 | SendCutSend | Reno, NV | 2018 | Not disclosed | — | 7/10 | Fast prototyping & small runs |
Detailed Company Profiles
1. Mayville Engineering Company (MEC) — Score: 9/10
Tier: Industry Leader
| Detail | Info |
|---|---|
| HQ | Milwaukee, Wisconsin |
| Founded | 1945 |
| Employees | 2,200+ |
| Revenue | $582 million (2024, publicly reported) |
| Facilities | 20+ locations across the U.S. |
| Certifications | NYSE-listed (MEC), ITAR, ISO-compliant |
| Website | mecinc.com |
MEC has held the #1 spot on The Fabricator's FAB 40 list[^3] for 15 consecutive years. That is the longest streak in the industry. No other contract fabricator in the U.S. has matched this consistency.
As a publicly traded company, MEC offers fully verified financial data. Their 2024 annual revenue was $581.6 million. You can check this in their SEC filings[^4].
MEC is vertically integrated. They handle design, prototyping, fabrication, aluminum extrusion, coating, and assembly. This means fewer vendors in your supply chain.
In 2025, MEC acquired Accu-Fab for $140.5 million. This moved them into the data center and critical power infrastructure markets. If your project involves power distribution enclosures or server hardware, MEC now competes directly in that space.
Key strengths:
- 15 years as the #1 ranked U.S. contract fabricator (FAB 40)
- Full vertical integration from design to final assembly
- Publicly traded — transparent financials
- Serves six distinct end markets (commercial vehicles, construction, powersports, agriculture, military, data center)
What to watch:
- Revenue declined slightly in 2024 (down 1.2%) due to softening demand
- Best suited for large OEM programs — not ideal for prototype-only projects
- Large organization — onboarding may take longer than with mid-sized shops
2. Cadrex Manufacturing Solutions — Score: 9/10
Tier: Industry Leader
| Detail | Info |
|---|---|
| HQ | Romeoville, Illinois |
| Founded | 1976 (as CGI Automated Manufacturing) |
| Employees | 2,000+ |
| Revenue | ~$480 million (ranked #2 on FAB 40, 2023–2025) |
| Facilities | 22 locations in 9 U.S. states + Mexico (~1.6M sq ft) |
| Certifications | ISO 9001, AS9100D[^5], ITAR, BAE Systems Supplier of the Year |
| Website | cadrex.com |
Cadrex is the #2 contract fabricator in the U.S. by revenue. They have held that position on the FAB 40 since 2023.
What makes Cadrex different is their geographic footprint. They operate 22 facilities across nine states and Mexico. That is the widest spread of any dedicated sheet metal fabricator in North America.
Cadrex is backed by CORE Industrial Partners. Through more than 10 acquisitions, they have built a platform that spans sheet metal fabrication, precision machining, stamping, plastic injection molding, and full electromechanical assembly.
Their strongest sector is data center and ICT hardware. They manufacture custom server rack components and enclosures for hyperscale cloud companies. If your project involves telecom, networking, or electrical infrastructure, Cadrex has purpose-built capabilities.
Key strengths:
- 22-facility North American footprint — the broadest among dedicated sheet metal fabricators
- Strong data center and ICT specialization
- Mirrored U.S.–Mexico capabilities for cost optimization and scale flexibility
- BAE Systems Supplier of the Year — validated defense-sector performance
What to watch:
- Privately held — revenue based on self-reporting, not independently audited
- Rapid acquisitions mean some legacy brands are still integrating
- Heavy ICT concentration could be a risk if that market slows
3. BTD Manufacturing — Score: 8/10
Tier: Strong Contender
| Detail | Info |
|---|---|
| HQ | Detroit Lakes, Minnesota |
| Founded | 1979 |
| Employees | 1,300+ |
| Revenue | ~$296–364 million (estimated) |
| Facilities | 5 locations in MN, IL, GA |
| Certifications | ISO 9001:2015, AWS certified welding |
| Website | btdmfg.com |
BTD has been a consistent top-5 fabricator on the FAB 40 for years. They are a full-service shop. Laser cutting, CNC punching, forming, welding, tool and die, CNC machining, EDM, powder coating — all under one roof.
Their lean manufacturing approach and rapid prototyping capabilities make them a good fit for OEMs that need to move quickly from design to production.
Key strengths:
- Consistent top-5 FAB 40 ranking
- Full-service: fabrication + machining + tool & die + finishing
- Lean production with rapid prototyping
- Geographically diversified (Midwest + Southeast)
What to watch:
- Privately held — limited public financial data
- Midwest-heavy footprint may increase freight for West Coast buyers
- Less visible in high-tech sectors (semiconductor, data center)
4. O'Neal Manufacturing Services (OMS) — Score: 8/10
Tier: Strong Contender
| Detail | Info |
|---|---|
| HQ | Vestavia Hills, Alabama |
| Founded | 1921 |
| Employees | 1,100+ |
| Revenue | ~$234–285 million (estimated; FAB 40 #4 in 2024) |
| Facilities | 10 locations across North America |
| Certifications | Part of O'Neal Industries |
| Website | onealmfgservices.com |
OMS has over 100 years in the metals industry. They are the highest-ranking family-owned fabricator on the FAB 40 list[^6].
Their parent company, O'Neal Industries, is one of the largest family-owned metals service centers in the U.S. This gives OMS deep supply chain relationships and raw material sourcing advantages.
OMS specializes in multistage processing and repetitive parts production for large OEMs. If you need thousands of the same part, made consistently, across multiple years — OMS is built for that.
Key strengths:
- 100+ years of metals industry experience
-
4 on FAB 40 — highest-ranking family-owned fabricator
- Backed by O'Neal Industries' supply chain network
- 10-facility footprint for geographic flexibility
What to watch:
- Heavy focus on agriculture and heavy equipment — limited high-tech exposure
- No digital quoting platform
- Family-owned structure limits public financial transparency
5. Ironform Corporation — Score: 8/10
Tier: Strong Contender
| Detail | Info |
|---|---|
| HQ | Chicago, Illinois |
| Founded | 2013 |
| Employees | 900+ |
| Revenue | ~$210–240 million (estimated) |
| Facilities | 8 locations |
| Certifications | Backed by Wynnchurch Capital |
| Website | ironform.com |
Ironform is younger than most companies on this list. They were founded in 2013. But they have grown fast.
Their specialty is heavy stamping combined with sheet metal fabrication. They operate presses for both light-gauge and heavy stamping work — a dual capability that broadens their project range significantly.
Ironform serves the Class 8 commercial vehicle market heavily. If your products go into trucks, construction equipment, mining machines, or agricultural equipment, Ironform understands your tolerance and durability requirements.
Key strengths:
- Top-5 U.S. fabricator by revenue
- Dual light-gauge and heavy stamping capabilities
- Robotic welding and polishing for consistent quality
- Private equity backing for continued investment
What to watch:
- Young company — founded 2013, shorter track record
- Concentrated in heavy industrial/transportation
- Midwest-heavy operations
6. PEKO Precision Products — Score: 8/10
Tier: Strong Contender
| Detail | Info |
|---|---|
| HQ | Rochester, New York |
| Founded | 1966 |
| Employees | 400+ |
| Revenue | Not publicly disclosed |
| Facilities | 375,000+ sq ft campus (4 specialized facilities) |
| Certifications | ISO 9001:2015, AS9100D, ISO 13485:2016[^7], ITAR, NIST 800-171, CMMC |
| Website | pekoprecision.com |
PEKO is the most certification-heavy fabricator on this list. They hold AS9100D (aerospace/defense), ISO 13485 (medical devices), ITAR registration, and CMMC compliance. If your project requires regulatory-grade traceability, PEKO is built for it.
They operate over 100 CNC machines and 20 welding stations with 140+ internal welding procedure specifications. Their work ends up in medical equipment, defense structures, semiconductor tools, energy storage systems, and data centers.
PEKO is not a high-volume commodity shop. They focus on low-to-medium volume, high-complexity work. If you need 50 precision enclosures for a medical device — not 50,000 stamped brackets — PEKO is the right call.
Key strengths:
- The most certified fabricator on this list (AS9100D, ISO 13485, ITAR, CMMC)
- Vertically integrated: engineering, fabrication, machining, finishing, full system assembly
- FDA 21 CFR Part 820 compliance for medical device fabrication
- 140+ internal WPS and CWI-staffed welding
What to watch:
- Single campus in Rochester, NY — no multi-site redundancy
- Not suited for high-volume commodity production
- Financials not publicly disclosed
7. Anchor Fabrication — Score: 7/10
Tier: Noteworthy Specialist
| Detail | Info |
|---|---|
| HQ | Fort Worth, Texas |
| Founded | 1990 |
| Employees | 500+ (estimated) |
| Revenue | ~$54–100M+ (estimated) |
| Facilities | 8 locations in TX, TN, MS, KS (1M+ sq ft total) |
| Certifications | ISO 9001:2015, CWI-staffed welding |
| Website | anchorfabrication.com |
Anchor operates over 1 million square feet of manufacturing space. For a company in the $50–100M revenue range, that is a lot of capacity. It tells you they are set up for big, heavy production runs.
They handle light, medium, and heavy fabrication — all the way from laser cutting through welding, machining, powder coating, and final assembly. Their strongest markets are rail, oil and gas, defense, heavy truck, and logistics equipment.
Key strengths:
- 1M+ sq ft across 8 facilities — massive capacity for the price tier
- True one-stop shop: engineering through final assembly
- Strong South/Central U.S. footprint
- CWI-staffed welding operations
What to watch:
- Concentrated in South/Central U.S.
- Less visible in high-precision, tight-tolerance applications
- Limited public financial data
8. Maysteel Industries — Score: 7/10
Tier: Noteworthy Specialist
| Detail | Info |
|---|---|
| HQ | Allenton, Wisconsin |
| Founded | 1936 |
| Employees | ~900 |
| Revenue | ~$140–180 million (estimated) |
| Facilities | 6 locations in U.S. and Mexico |
| Certifications | UL-listed, ISO 9001 |
| Website | maysteel.com |
Maysteel has been making sheet metal products since 1936. That is nearly 90 years of experience.
Their specialty is enclosures. Custom OEM enclosures, kiosks, cabinets, server racks, and electrical housings. If your project is an enclosure or cabinet — especially for utilities, energy, telecom, or EV charging infrastructure — Maysteel is one of the most experienced partners in the country.
They focus heavily on design-for-manufacturability (DFM). Their engineers review your design before production starts. This helps catch cost-driving features early.
Key strengths:
- ~90 years of sheet metal fabrication experience
- Deep DFM expertise for enclosures and cabinets
- U.S. + Mexico + Europe supply chain footprint
- Strong position in utility/infrastructure and EV charging markets
What to watch:
- Narrow product scope — enclosures and cabinets primarily
- Smaller revenue than top-5 competitors
- Less brand recognition outside utility and infrastructure sectors
9. Xometry — Score: 7/10
Tier: Noteworthy Specialist
| Detail | Info |
|---|---|
| HQ | North Bethesda, Maryland |
| Founded | 2013 |
| Employees | 1,000+ (corporate); 10,000+ manufacturing partners |
| Revenue | $513 million (2024, NYSE: XMTR) |
| Facilities | Digital marketplace — distributed partner network |
| Certifications | ISO 9001, ISO 13485, IATF 16949, AS9100D, ITAR |
| Website | xometry.com |
Xometry is not a traditional fabricator. They are a digital manufacturing marketplace. You upload a CAD file. Their AI prices it instantly. A vetted partner shop makes the part.
This model works well for multi-process projects. You can source sheet metal parts, CNC machined components, 3D prints, and injection molded parts from a single platform. For engineers prototyping new products, this convenience is valuable.
Xometry is publicly traded (NYSE: XMTR) with $513 million in 2024 revenue. That gives you financial transparency.
But here is the trade-off: Xometry does not own or operate its factories. Quality depends on which partner shop fulfills your order. For simple parts, this usually works fine. For precision sheet metal with tight tolerances, results can vary.
Key strengths:
- Largest digital manufacturing marketplace in the U.S.
- Instant online quoting from CAD files
- Multi-process: sheet metal + CNC + 3D printing + molding
- Publicly traded — transparent financials
What to watch:
- Does not own manufacturing — quality varies by partner shop
- Generally more expensive for simple sheet metal than going direct
- Platform-mediated communication — less direct access to fabricators
- Inconsistent quality reported for tight-tolerance sheet metal work
10. SendCutSend — Score: 7/10
Tier: Noteworthy Specialist
| Detail | Info |
|---|---|
| HQ | Reno, Nevada |
| Founded | 2018 |
| Employees | Not disclosed |
| Revenue | Not disclosed |
| Facilities | 3 U.S. locations (NV, KY, TX) — all in-house |
| Certifications | 100% U.S.-based production |
| Website | sendcutsend.com |
SendCutSend is the easiest way to order custom sheet metal parts in the United States. Upload a file. Pick a material and thickness. Get an instant price. No minimums. No setup fees.
SendCutSend makes everything in-house at their own U.S. facilities. This gives them direct quality control over every part. Their customer reviews are exceptionally strong — consistently praised for quality, speed, and service.
They offer laser cutting, waterjet cutting, CNC bending, CNC machining, powder coating, anodizing, plating, and hardware insertion.
But SendCutSend has limits. They do not offer welding, complex assembly, or electromechanical integration. They are a piece-part fabricator. If you need a fully welded and assembled enclosure, you will need a different partner.
Key strengths:
- Instant pricing, zero minimum orders — the most accessible online platform
- All production done in-house at U.S. facilities
- Transparent pricing with no hidden fees
- Exceptionally strong customer reviews
What to watch:
- No welding, assembly, or integration services
- Best for flat/2D parts with secondary bending — not full fabrication
- Young company (founded 2018) with limited long-term track record
- Financials not publicly available
How to Choose the Right Sheet Metal Fabrication Partner
Knowing the top 10 companies is a starting point. Picking the right one for your project requires a different process. Here is how I approach it.
Match the Fabricator to Your Project Type
Not every fabricator is right for every job. Here is a quick decision guide:
| Your Project Need | Best Fit from This List |
|---|---|
| High-volume OEM production (10,000+ units/year) | MEC, Cadrex, BTD, O'Neal, Ironform |
| Precision enclosures and cabinets | Maysteel, Cadrex, PEKO |
| Defense or medical device fabrication | PEKO (AS9100D + ISO 13485 + CMMC) |
| Quick prototypes or small-batch parts | SendCutSend, Xometry |
| Heavy fabrication (thick plate, large weldments) | Anchor, O'Neal, Ironform |
| Data center and server hardware | Cadrex, Maysteel, MEC |
| Multi-process sourcing (sheet metal + CNC + 3D print) | Xometry |
Ask These Questions Before You Commit
- What certifications do you hold? Ask for copies. Do not accept "ISO certified" without a certificate number and accrediting body.
- Can you share reference customers in my industry? A fabricator with aerospace experience may not understand medical device requirements.
- What is your standard lead time for my part type? Get specific. "4–6 weeks" is vague. "22 working days from approved drawing" is useful.
- Do you offer DFM review? A good fabricator will flag cost-saving design changes before you cut a single part.
- What is your defect rate and rework policy? Ask for data. If they cannot provide it, that tells you something.
- Where are your facilities? Shipping heavy metal parts across the country is expensive. Location matters.
Start Small, Then Scale
I always recommend a trial order before committing to production volumes. Send a small batch. Inspect the parts. Evaluate communication and lead time accuracy. Then decide.
What About Fabricators Outside the U.S.?
This list focuses on U.S.-based companies. But many OEM engineers also source sheet metal parts from overseas — especially from China — for cost, scale, or lead time reasons.
If you are considering a global alternative, I recommend evaluating fabricators that offer the same process depth as the U.S. companies above: laser cutting, CNC bending, welding, surface finishing, and assembly — all under one roof.
One example worth looking at is ZAK (zakfab.com). ZAK is a precision sheet metal fabrication manufacturer based in China. They serve OEM clients worldwide with capabilities that include DFM review, laser cutting, CNC bending, MIG/TIG welding, powder coating, plating, anodizing, and full assembly. Their process depth is comparable to mid-tier U.S. fabricators, often at a lower cost point for medium-to-high volume production.
If your project allows for international sourcing, it is worth getting a quote from both a domestic and overseas fabricator. Compare not just price, but lead time, communication quality, DFM feedback, and sample part accuracy.
Disclosure: This article is published by ZAK (zakfab.com). ZAK is included as a global alternative for readers who are also evaluating overseas fabrication partners. The top 10 ranking above covers U.S.-based companies only and was produced using the independent methodology described in this article.
Conclusion
The U.S. sheet metal fabrication market is deep. It ranges from publicly traded companies with $500M+ in revenue to digital-first platforms where you can order a single custom part with no minimum.
The right choice depends on your project. High-volume OEM programs need MEC or Cadrex. Precision defense or medical work needs PEKO. Quick prototypes need SendCutSend. And if you want to compare domestic versus overseas costs, get a parallel quote from a capable international fabricator like ZAK.
Use the scoring framework and decision guide in this article to shortlist 3–5 companies. Request quotes. Inspect samples. Then commit.
That is how good sourcing decisions are made — with data, not guesswork.
Last updated: March 2026. Data sources include The Fabricator FAB 40 (2023–2025), SEC filings, industry reports from Research and Markets and Technavio, and direct company disclosures. This article is reviewed and updated periodically to reflect changes in the market.
[^1]: The Fabricator's FAB 40 is the industry's most widely referenced annual ranking of the largest U.S. contract metal fabricators by reported revenue. Published every June, it covers companies that earn the majority of their revenue from custom sheet metal, plate, and tube fabrication. Visit to see the full interactive list and methodology.
[^2]: ISO 9001:2015 is the international standard for quality management systems, published by the International Organization for Standardization. Over 1 million organizations in 189 countries hold this certification. This link goes to ISO's official standard page where you can review the scope and requirements.
[^3]: The Fabricator's 2025 FAB 40 editorial article explains how the top 10 FAB 40 companies have collectively increased revenue by 70% since 2021 to $3.1 billion. It provides context on consolidation trends and diversification strategies across the largest U.S. fabricators.
[^4]: MEC's investor relations page provides direct access to all SEC filings, including 10-K annual reports and 10-Q quarterly reports. Use this to independently verify revenue, earnings, facility counts, and acquisition details cited in this article.
[^5]: AS9100D is the internationally recognized quality management standard for aerospace, aviation, and defense manufacturers. It builds on ISO 9001:2015 with additional requirements for product safety, counterfeit parts prevention, and risk management. This NQA page explains the standard, who needs it, and the certification process.
[^6]: OMS announced their #4 FAB 40 ranking and their distinction as the highest-ranking family-owned fabricator on the list. This company press release confirms the ranking and provides OMS leadership's perspective on the achievement.
[^7]: ISO 13485:2016 is the international standard for quality management systems specific to medical device manufacturing. It requires compliance with regulatory requirements for medical devices across all lifecycle stages. PEKO's ISO 13485 certification enables them to fabricate components for FDA-regulated medical equipment.