Top 11 Welding Companies in Illinois 2026

425 Fabrication Division and Mobile Welding

Rockford, Illinois

425 Fabrication Division operates from a 45,000-square-foot facility in Rockford, Illinois. The division was formed in 2012 as part of 425 Manufacturing, which Mike and Michelle Thomason founded to provide general machining services and aftermarket parts for drilling equipment in the greater Rockford area.

Chicago Metal Fabricators

Chicago, Illinois

Founded in 1908 on Chicago's South Side, Chicago Metal Fabricators operates as part of the Nalbach Group, a conglomerate of companies specializing in custom automation machinery and fabricated components. The company began as a metal cabinet and ductwork fabricator before expanding into heavy and light gauge metal fabrication across three integrated facilities.

Classic Sheet Metal

Addison, Illinois

Classic Sheet Metal was founded in March 1962 in a 7,500-square-foot facility in Chicago, Illinois. The company relocated to Schiller Park in the late 1960s, then to a 30,000-square-foot plant where it operated for three decades before moving to its current headquarters in Addison, Illinois, in 2000.

Valley Fabrication, Inc.

La Salle, Illinois

Valley Fabrication, Inc. was founded in 1973 in La Salle, Illinois.

Harmony Metal Fabrication

Gilberts, Illinois

Harmony Metal Fabrication, Inc. operates from Gilberts, Illinois, in the Chicago metropolitan area.

Superior Metalcraft

Lansing, Illinois

Superior Metalcraft was founded in 2008 in Lansing, Illinois, and operates a fully-equipped fabrication facility in the Chicago area. The company provides custom metal fabrication and machining services, working with stainless steel, aluminum, and carbon steel.

Advanced Custom Metals Inc

Des Plaines, Illinois

Advanced Custom Metals Inc (ACM) operates from Des Plaines, Illinois, providing precision metal fabrication and welding services to industrial and commercial clients. The company focuses on laser cutting and welding using 3-axis machinery, though its founding year and ownership structure are not publicly disclosed.

Dawson Fabrication

Edwards, Illinois

Dawson Fabrication operates from Edwards, Illinois, just west of Peoria. The family-owned company has been in business for over two decades and is now three generations deep.

The shop provides custom sheet metal fabrication, full-service welding (MIG, TIG, and stick), industrial ventilation systems, and design-to-installation services. It produces stainless steel equipment such as work tables, backsplashes, shelving, and carts for food and clean manufacturing environments, as well as plant-floor equipment including conveyors, carts, machine guards, stands, chutes, hoppers, enclosures, and brackets.

Grimm Metal Fabricators Inc

Lombard, Illinois

Grimm Metal Fabricators, Inc. operates from Lombard, Illinois, where it runs a full-service fabricating and welding facility across two adjacent buildings totaling 42,000 square feet.