Mayville Engineering Company
Largest US metal fabricator, founded 1945, offering prototyping, sheet metal fabrication, machining, coating, and assembly across 20 plus plants for OEMs.
What they do
Mayville Engineering Company, MEC, was founded in 1945 and describes itself as a supply chain partner for OEM manufacturers in heavy and medium-duty commercial vehicles, construction, power sports, agriculture, military and other industries. It states a broad range of prototyping and tooling, production fabrication, coating, assembly and aftermarket services.
MEC states it has been named the largest fabricator in the United States by Fabricator Magazine for 16 consecutive years, with more than 2500 employees at more than 20 national locations. Its quality page states its facilities are ISO 9001, ISO 14001 and IATF certified, with facility-level lists for each standard. Headquarters city follows its own 2023 company overview PDF as Mayville.
Other processes stated on their site
Capabilities
Sheet metal
Production fabrication, prototyping and tooling, coating and assembly for OEM manufacturers, across more than 20 national locations.
CNC machining
Machining listed among MEC processes, which include complete metal fabrication, laser and plasma cutting, stamping, forming, machining, welding and tube bending and forming.
Commercial terms
Minimum order
Not stated
Lead time
Not stated
Quoting
By request
Cost tier $$$ of $$$$, ProductFlo classification
MEC is the largest US fabricator by its own statement, founded in 1945 and serving OEM production programs across more than 20 plants, which matches the domestic service-led category.
Alternatives
Compare side by side- EVS Metal
Contract precision sheet metal fabricator for sustained OEM production programs, with laser cutting, bending, welding and powder coating in house.
- Cadrex
North American mechanical solutions provider with 22 facilities offering sheet metal, precision CNC machining and injection molding.
- Chapco
Automated high volume sheet metal fabrication in Connecticut, with fiber laser cutting, punching, bending and CNC machining for OEM programs.
- All Metals Fabrication
Utah fabricator offering instant priced laser cut and formed sheet metal parts, plus tube laser cutting, for prototypes and short runs.
- Anebon
Dongguan shop pairing CNC machining with sheet metal fabrication and real-time quotations for overseas OEMs.
Sources
Not verified
- ITAR status
- MOQ
- lead time
Last verified November 11, 2026. Listings are informational and are not endorsements. Cost tiers are ProductFlo's classification, not quotes: confirm pricing, lead time and capability with the vendor.