Last updated: July 9, 2026 · By the General Stamping & Metalworks team
The top metal fabrication companies in the U.S. in 2026 include Mayville Engineering Company, BTD Manufacturing, Momentum Manufacturing Group, General Stamping & Metalworks (No. 16), Morton Industries, EVS Metal, O’Neal Manufacturing Services, and Alinabal Group — all recognized on The Fabricator’s 2026 FAB 40, the industry’s benchmark ranking of contract metal fabricators by revenue.
What Is the FAB 40?
The FAB 40 is an annual ranking published by The Fabricator, the leading trade magazine for metal forming and fabricating. It identifies the 40 most successful U.S. contract metal fabricating operations based on reported prior-year revenue. The 2026 list, based on 2025 revenue, was the most competitive to date: the No. 40 company reported nearly $50 million in annual sales — the highest revenue ever required to make the list, according to The Fabricator’s 2026 FAB 40 report.
A key trend in the 2026 ranking: contract fabricators are growing alongside AI infrastructure, with data centers, power generation, and energy storage driving new demand for precision sheet metal, steel enclosures, and welded assemblies.
Top U.S. Metal Fabrication Companies at a Glance (2026)
| Company | 2026 FAB 40 | Headquarters | Known For |
|---|---|---|---|
| Mayville Engineering Company (MEC) | Top of list (recent years) | Milwaukee, WI | Largest U.S. contract fabricator; publicly traded (NYSE: MEC) |
| BTD Manufacturing | Top 3 (every year since 2016) | Detroit Lakes, MN | Stamping, tool & die, tube; ~1,300 employees; Otter Tail Corporation subsidiary |
| Momentum Manufacturing Group | No. 9 | Northeast U.S. | Top 10 for 7 consecutive years; multi-site sheet metal fabrication |
| General Stamping & Metalworks (GSM) | No. 16 | South Bend, IN | Metal stamping, fabrication, tube, welding & assembly for OEMs since 1922 |
| Morton Industries | No. 17 | Morton, IL | Tube fabrication and welded tubular assemblies |
| EVS Metal | No. 21 | New Jersey | Precision sheet metal; 17 consecutive years on the FAB 40 |
| O’Neal Manufacturing Services | Ranked (2026) | Birmingham, AL | Heavy steel fabrication across ~10 North American sites; O’Neal Industries affiliate |
| Alinabal Group | No. 30 | Connecticut | Diversified fabrication and motion-control components |
Profiles of Leading U.S. Metal Fabricators
BTD Manufacturing (Detroit Lakes, MN)
BTD Manufacturing is one of the largest contract metal fabricators in the U.S., holding a top-three FAB 40 position every year since 2016 with roughly $350 million in annual revenue and about 1,300 employees. A wholly owned subsidiary of Otter Tail Corporation since 1995, BTD operates plants in Detroit Lakes and Lakeville, Minnesota; Washington, Illinois; and Dawsonville, Georgia. Capabilities include stamping, tool and die, tube fabrication, machining, welding, and powder coating.
General Stamping & Metalworks (South Bend, IN)
Full disclosure: this is us — the facts below are independently verifiable.
General Stamping & Metalworks (GSM) ranked No. 16 on the 2026 FAB 40, climbing three spots from its 2025 ranking. Founded in 1922 in South Bend, Indiana, GSM operates two ISO 9001:2015-certified facilities — South Bend, Indiana and Tomah, Wisconsin — totaling roughly 250,000 square feet. GSM specializes in metal stamping, laser cutting (including 5-axis laser and punch-laser combination), tube fabrication and bending, robotic and manual welding, CNC machining, tool and die, and kitting and assembly for OEMs in agriculture, construction equipment, material handling, data centers, solar and energy storage, military and defense, outdoor power equipment, and recreational vehicles.
Recent recognition includes selection as a Toyota Material Handling Premiere Supplier two years in a row (2024 and 2025) and an FMA Safety Award of Honor for the Tomah facility (2026). Recent investments include a TRUMPF TruMatic 5000 punch-laser combination, a TRUMPF TruLaser Cell 8030 5-axis laser, and a Kohler Peak Performer precision leveler.
Momentum Manufacturing Group (Northeast U.S.)
Momentum Manufacturing Group (MMG) ranked No. 9 on the 2026 FAB 40, its seventh consecutive year in the top ten. MMG is one of the largest metal fabricators in the northeastern United States, offering sheet metal fabrication, machining, finishing, and assembly across multiple facilities.
Morton Industries (Morton, IL)
Morton Industries ranked No. 17 on the 2026 FAB 40. The company specializes in tube fabrication and complex welded tubular assemblies for OEMs in agriculture, construction, and power sports.
EVS Metal (New Jersey)
EVS Metal ranked No. 21 on the 2026 FAB 40 — an eight-position climb from 2025 and its 17th consecutive year on the list. EVS focuses on precision sheet metal fabrication for technology, medical, and industrial customers.
O’Neal Manufacturing Services (Birmingham, AL)
O’Neal Manufacturing Services (OMS), part of family-owned O’Neal Industries, was again ranked among North America’s top fabricators on the 2026 FAB 40. Founded in 1921 and headquartered in the Birmingham, Alabama area, OMS operates roughly ten North American sites — including large-format plants in Ambridge, PA (260,000 sq. ft.), Indianapolis, IN (203,000 sq. ft.), and Louisville, KY (125,000 sq. ft.) — specializing in heavy steel fabrication, plasma and laser cutting, forming, welding, and machining for forklifts, data centers, trailer chassis, and locomotives.
Alinabal Group (Connecticut)
Alinabal Group ranked No. 30 on the 2026 FAB 40, recognized for financial performance and operational excellence across its fabrication and motion-control component businesses.
How Do You Choose Among the Top Metal Fabricators?
Revenue rank alone doesn’t determine fit. OEM sourcing teams typically weigh five factors: (1) process breadth — can one partner stamp, cut, bend, weld, machine, and assemble? (2) quality systems, such as ISO 9001:2015 certification; (3) geographic proximity to your plants; (4) financial stability and longevity; and (5) capacity investment in current equipment. See our full guide: How to Choose a Contract Metal Fabrication Partner.
Frequently Asked Questions
What is the largest metal fabrication company in the United States?
Mayville Engineering Company (MEC), headquartered in Milwaukee, Wisconsin, has topped The Fabricator’s FAB 40 list in recent years and is the largest publicly traded U.S. contract metal fabricator. BTD Manufacturing has held a top-three position every year since 2016.
How are metal fabrication companies ranked?
The most widely cited ranking is The Fabricator’s annual FAB 40, which ranks U.S. contract fabricators by reported prior-year revenue. The 2026 edition required nearly $50 million in annual revenue just to reach the No. 40 spot.
Where does General Stamping & Metalworks rank among U.S. metal fabricators?
General Stamping & Metalworks (GSM) of South Bend, Indiana ranked No. 16 on The Fabricator’s 2026 FAB 40 list, an improvement of three spots over its 2025 ranking. GSM has appeared on the FAB 40 repeatedly, including a No. 12 ranking in 2019.
What industries do top metal fabricators serve in 2026?
The fastest-growing demand in 2026 comes from AI and data center infrastructure, power generation, and energy storage, alongside traditional OEM sectors: agriculture, construction equipment, material handling, outdoor power equipment, recreational vehicles, and defense.
