Best Steel Manufacturing Suppliers in United States

Superior Structural Corp.

🇺🇸 United States

1969

11-50 people

Manufacturer/Wholesaler/Service Company

Established brand

OEM manufacturer

Product customization

Industry association member

Key customer

HONDA

Description

Superior Structural Corp. is a leading US-based manufacturer, wholesaler, and service company specializing in high-grade structural steel fabrication and miscellaneous metal fabrications. Established in 1969 and operating from New Berlin, Wisconsin, the company has over 50 years of experience in producing steel building structures. With 11-50 employees and an estimated annual revenue of $13.3 million, Superior Structural Corp. offers comprehensive services including fabrication, material supply (joist and deck), and erection by skilled ironworkers. They are certified as a Woman-Owned Business and hold certifications from The American Institute of Steel Construction and The Better Business Bureau. Their extensive product range includes structural beams and columns, steel trusses and girders, catwalk systems, steel joists and metal decking, mezzanines, steel stairs and stairways, railings, gates, ladders, and custom steel products such as heavy-duty machine bases, structural platforms, and ornamental railings. They serve commercial, industrial, government, and residential sectors, with notable customers including Kohl's, Lowe's, Target, and McDonald's. The company also provides custom fabrication, welding, grinding, finishing, painting, galvanizing, and powder coating services, adhering to ASTM standards and OSHA compliance.

Steel Columns and Beams

Structural Beams and Columns

KAB Tech Corp

🇺🇸 United States

1985

201-300 people

Manufacturer

Established brand

Product customization

OEM manufacturer

Key customer

BMW

Key market

🇨🇦 Canada

Description

KAB Tech Corp, established in 1985, is a contract manufacturer based in Duncan, US, specializing in custom-made modular construction systems and industrial safety structures. With 201-300 employees, the company designs, fabricates, and installs a wide range of products including mezzanines, modular offices, wire partitions, material lifts, guard shacks, noise control solutions, industrial safety barriers, warehouse shelving, storage racks, raised equipment platforms, custom stair towers, walkways, landings, modular building systems, security cages, forklift guard rail, and conveyor guards. KAB Tech Corp serves various industrial facilities such as manufacturing plants, warehouses, distribution centers, automotive, food production, and aerospace factories, catering to both small businesses and major companies like Michelin, GE, BMW, Caterpillar, and Ford. Their modular products are designed for flexibility, allowing for reconfiguration, expansion, and relocation, and are often prefabricated for efficient installation. The company emphasizes strict quality control and durable materials, offering off-site construction for some units. While primarily serving the U.S. market, KAB Tech Corp has also completed projects in Canada, Belgium, and Brazil, demonstrating international trade capabilities.

A steel warehouse mezzanine structure helps optimize industrial space

Textile Equipment Mezzanine - Product Storage Solution by KABTech

Mezzanine Systems

Plywood Flooring - Customizable Mezzanines by KABTech

Warehouse Mezzanine Manufactured by KABTech USA

Prefabricated Mezzanine

Diamond Plate - Customizable Mezzanines by KABTech

Quick Install Team Rooms, Break Rooms or Multi-Function Rooms

Custom Warehouse Mezzanines - Manufactured by KABTech USA

In Plant Offices

DeFabCo, Inc.

🇺🇸 United States

1997

11-50 people

Manufacturer/Service Company

Established brand

Product customization

Industry association member

Key customer

AMERIFLORA

Key market

North America

Description

DeFabCo, Inc. is a custom metal fabricator and industrial contractor based in Columbus, Ohio, with over 50 years of experience. Established as one of central Ohio's largest non-union industrial contractors, the company operates from a five-acre complex with over 48,000 square feet under roof. DeFabCo specializes in providing comprehensive solutions from design to fabrication and installation, serving manufacturing, commercial construction, and artistic markets. Their diverse capabilities include custom metal fabrication, stainless steel fabrication, industrial piping systems, architectural metal fabrication, custom food processing equipment, machine guarding, and sheet metal fabrication. They also offer extensive industrial contracting services such as CNG installation, industrial ventilation HVAC, custom dust collection systems, project design, millwright services, and field services. DeFabCo employs a skilled workforce including designers, fabricators, riggers, millwrights, pipe fitters, and certified welders, with staff possessing over 300 years of combined experience. The company emphasizes quality control, safety, and environmental compliance, holding certifications such as the Associated Builders and Contractors Gold Step Award and the Governor’s Award for Workers’ Compensation. DeFabCo is bonded and insured, and has an annual revenue of $16.7 million with 11 to 50 employees.

Stainless Steel

Sheet Metal Fabrication - Custom Steel Tank

compressed natural gas custom piping

Sheet Metal Fabrication

CNG Valves

cng custom pipes and valves

ABC Member Logo

ISNetworld Member Vendor Logo

Industrial Piping Systems

Food Processing Equipment

Project Design

T&R Welding Systems

🇺🇸 United States

1972

11-50 people

Manufacturer/Service Company

Established brand

OEM manufacturer

Small batch production

Product customization

Key customer

FRIGATE

Description

T&R Welding Systems, established in 1972, is an ISO 9001:2015 certified manufacturer and service company based in Dayton, Ohio, specializing in fabrication and production welding services, as well as precision tool and die repairs. With 11 to 50 employees, the company leverages skilled personnel and advanced technology to manage projects from analysis through production, quality assurance, and delivery. Their core services include Fabrication Welding Services, Production Welding Services, and Tool & Die Repair, with specific expertise in Locomotive Lift Jack Fabrication & Assembly, Computer Steel Tube Frame Fabrication, and Custom Overhead Crane Rail Fabrication. They offer 5-axis horizontal machining, FCAW, TIG, or MIG welding, and milling services, working with a diverse range of materials including mild steel, stainless steel, aluminum, nickel, titanium, and tool steel. T&R Welding Systems also provides secondary services such as painting, powder coating, grinding, drilling, and assembly, serving industries including locomotive, military, government, appliance, robotics, and fracking. They are equipped to handle custom metal fabrication, metalworking equipment manufacturing, and special dies, ensuring high-quality weldments and repairs tailored to client specifications.

T&R Welding Systems, Inc | Precision Fabrications/Tool & Die Welding

Coiling Technologies, Inc

🇺🇸 United States

1976

51-100 people

Manufacturer/Trading Company/Service Company

Established brand

OEM manufacturer

ODM manufacturer

Product customization

Shipments

745

Key customer

FLOWSERVE

Key market

North America

Description

Coiling Technologies, Inc. is a premier custom spring manufacturer and service provider headquartered in Houston, Texas. Established in 1976, the company operates a 120,000 sq. ft. facility specializing in the engineering, design, and production of high-tech industrial springs and wire forms. As an ISO 9001:2015 certified organization, they serve a diverse global clientele, including Fortune 500 corporations, government agencies, and the Department of Defense. Their extensive product portfolio features compression, torsion, extension, wave, and suspension springs, as well as specialized components like Belleville washers, canted coil springs, and Mil-Spec hardware. The company is distinguished by its significant manufacturing scale, maintaining an inventory of over 635 metric tons of raw materials. Their capabilities include cold coiling for materials up to 2.5 inches (65 mm) in diameter and 72 inches in length. They work with a vast array of materials ranging from standard carbon and stainless steels to high-performance alloys such as Inconel, Hastelloy, Monel, Elgiloy, and Titanium. Coiling Technologies, Inc. provides comprehensive end-to-end solutions, including OEM and ODM services, CNC-controlled coiling, in-house heat treating, shot peening, powder coating, and non-destructive testing. With a focus on precision and quality, they maintain a rejection rate of less than 1%. The company supports critical industries such as aerospace, oil and gas, automotive, medical, and military defense, offering both high-volume production and fast-turnaround prototyping.

Custom 17-7 PH Alloy Compression Spring Premium Type of Springs$10

Custom Conical Piping Spring Chrome Silicon Valve Wire UNS G92540 ASTM A877 AISI 9254 DIN 2076 17223 Pt2 VDSiCr JIS Industrial$10

Custom Conical Spring Elgiloy Alloy UNS R30003 ASTM F1058 AMS 5833 ISO 5832-7$10

Custom Piping Spring Monel K500 UNS N05500 ASTM B865 AMS 4676 DIN 17753 2.4375 BS 3075 NA18 BS 3076NA13 ISO 9724$10

Custom Alloy Conical Spring Oil Tempered Wire UNS K07001 ASTM A229 AISI 1065$10

Custom Valve Spring Elgiloy UNS R30003 ASTM F1058 AMS 5833 SAE J461 ISO 5832-7$10

Custom Piping Spring AISI 6150 Alloy UNS G61500 ASTM A29 ASTM A304 ASTM 679 AIAS 6150 EN 10089 DIN 51CrV4 1.8159 JIS G4801$10

Abtrex Industries, Inc.

🇺🇸 United States

1969

51-100 people

Service Company/Manufacturer

Established brand

Product customization

Patented technology

Industry association member

Key customer

Key market

North America

Description

Abtrex Industries, Inc. is a leading US-based manufacturer and service company specializing in abrasion and corrosion control solutions. Established in 1969, the company has grown to over 50 employees and generates an estimated $26.9 million in revenue. With facilities in Indiana, Alabama, Pennsylvania, and Texas, Abtrex Industries offers a comprehensive range of services including rubber lining, protective coatings, and custom steel and FRP fabrication. They provide solutions for tanks, pipes, custom vessels, and railcar linings, serving critical industries such as chemical processing, mining, power generation, and steel. The company is ISO 9001 certified and holds additional certifications including ASME, MSHA, and AAR M1003, demonstrating a strong commitment to quality and safety. Abtrex Industries is known for its 24/7 emergency services, rapid-response field crews, and advanced engineering capabilities, including Finite Element Analysis (FEA) for design. They also offer patented acid recovery systems for steel pickling, aiming to reduce downtime and improve process efficiency. Their expertise extends to on-site installations, repairs, and inspections, with a 24-hour guaranteed response time, 365 days a year.

Field Tank Repair Saves Production

Field Applied Tank Linings and Coatings

Corrosive Chemical Pipe and Fittings

Thickener Tanks

Secondary Containment

Abtrex Certification Icons

Slurry Pipe

Sulfuric Acid Open-top Tank

Natural Rubber-Lined Tanks

Recovery Tanks

Over the Road Tank Trailer - Case Study Photo

Understanding Seam Types in Rubber Linings

Allied Bolt Products, LLC

🇺🇸 United States

1961

11-50 people

Manufacturer/Trading Company/Distributor

Established brand

Own brand

Industry association member

Shipments

Key customer

FITEX

Key market

🇺🇸 United States

Description

Allied Bolt Products, LLC, also known as Allied Bolt, is a US-based manufacturer, trading company, and distributor with over 60 years of experience, established in 1961. With 11 to 50 employees, the company specializes in hardware and construction products for the telecommunications and power utility industries, serving a wide range of sectors including light to heavy construction, manufacturing, automotive, electrical, marine, HVAC, and wind energy. Allied Bolt operates an office in Rye Brook, NY, a warehouse facility in Greensboro, NC, and maintains manufacturing capabilities, including an internal testing laboratory. They offer an extensive inventory of fasteners, including bolts, nuts, washers, rods, studs, and anchors, available in various materials such as steel, stainless, brass, bronze, nylon, and aluminum, in both American Standard and Metric sizes. A key specialization is in hot galvanized bolts, anchor bolts, rods, studs, nuts, washers, and plates, with some products domestically manufactured. Their product portfolio also includes poleline hardware, aerial drop hardware, grounding hardware, banding, wall anchors, drop attachments, screws, pins, cable ties, clamps, tools, safety/PPE, and general industrial supplies. Allied Bolt adheres to numerous ASTM and SAE standards, including ASTM F1554, ASTM A193 B7, and ASTM A307. The company was acquired by Power Grid Components, Inc. in August 2024, aiming to expand product offerings and market presence.

CARRIAGE BOLTS ZINC PLATED / PLAIN STEEL

STRUCTURAL HEX BOLT A325 PLAIN STEEL

STRUCTURAL TENSION CONTROL (TC) BOLTS PLAIN STEEL

SQUARE HEAD LAG BOLTS PLAIN STEEL / ZINC PLATED

LEFT-HAND GRADE 8 TAP BOLTS PLAIN STEEL

ArKion Systems acquired by Mueller Water Products

Mitsubishi Electric Power Products, Inc Acquires Computer Protection Technology

COUPLINGNUT

OSSIO, LTD. COMPLETES $38.5 MILLION SERIES C FINANCING

National Material L.P.

🇺🇸 United States

1964

1001-2000 people

Manufacturer/Trading Company/Service Company/Distributor

High capacity factory

Established brand

Large enterprise group

OEM manufacturer

Shipments

Key customer

NATIONAL MATERIALS

Key market

🇺🇸 United States

Description

National Material L.P. (NMLP), founded in 1964 and headquartered in Elk Grove Village, Illinois, is one of the largest privately owned industrial groups and independent steel service centers in North America. Operating over 16 business units with a workforce of up to 2,000 employees, the company provides comprehensive metal supply and processing solutions across the United States, Mexico, Canada, and China. NMLP is structured into specialized divisions including the Steel Group, Stainless and Alloys Group, Aluminum Group, and Raw Material Trading Group, serving critical industries such as Automotive, Aerospace, Defense, and Electrical Energy. The company operates state-of-the-art facilities equipped for precision metal processing, including pickling, slitting, cut-to-length, leveling, and advanced blanking (laser, multi, and stamped). Their extensive product portfolio features Hot Rolled, Cold Rolled, and Advanced High Strength Steel (AHSS), alongside Galvanized, Prepainted, and Electrical Steel. They also specialize in Aluminum alloys, stainless steel, and ferrous raw materials like pig iron. Beyond material supply, National Material L.P. offers contract manufacturing, metallurgical testing, and global tooling services. With IATF 16949 and ISO 9001 certifications, the company maintains high quality standards for Tier 1 and OEM customers, including Ford Alliance and RAO Manufacturing. Their integrated supply chain capabilities are supported by extensive warehouse storage, EDI systems, and multi-modal logistics including rail and barge shipping. NMLP continues to lead the industry through investments in automation and sustainable metal processing initiatives.

Steel

GALVANIZED STEEL

STEEL PROCESSING

STEEL SLITTING

GALVANIZED STEEL

HOT ROLLED STEEL

COLD ROLLED STEEL

HOT ROLLED STEEL

COLD ROLLED STEEL

Steel Service Centers

ADVANCED HIGH STRENGTH STEEL

Tampco Inc.

🇺🇸 United States

1975

11-50 people

Manufacturer

Established brand

OEM manufacturer

Product customization

Own brand

Key customer

AIRBUS HELICOPTERS

Key market

North America

Description

Tampco Inc. is a premier U.S.-based manufacturer and custom stainless steel fabricator headquartered in Elkin, North Carolina. Established in 1975, the company has over 50 years of experience specializing in high-quality tubular accessories and stainless steel components. Operating as an OEM and contract manufacturer, Tampco serves a diverse range of industries including marine, automotive, medical, furniture, and recreational vehicles (RV). The company is particularly recognized for its expertise in the maritime sector, supplying major manufacturers such as Boston Whaler and Grady White with fully welded bow rails, grab handles, lean posts, and cooler seats. With a workforce of approximately 11 to 50 employees and an annual revenue estimated between $2.4 million and $9.7 million, Tampco maintains a state-of-the-art manufacturing facility. Their capabilities include precision tube bending, TIG welding, polishing, and CAD-assisted design. The company utilizes high-grade American steel, including 316 stainless, to ensure durability and safety across its product lines. Beyond marine hardware, their portfolio includes emergency vehicle parts for ambulances and firetrucks, medical safety rails, RV ladders, and a specialized line of stainless steel furniture components for chairs and tables. Tampco is committed to operational excellence, boasting a 100% on-time delivery rate and a defect rate of less than 1%. They offer custom manufacturing services, fitting products to exact molds for quality assurance, and provide on-site prototyping services. The company primarily serves the North American market and continues to expand its fabrication capabilities to support complex industrial and maritime projects.

Stainless Steel Gate Hinge

Miscellaneous Stainless Steel parts pieces

Ski Tow stainless steel rail

Miscellaneous Stainless Steel parts pieces

Boat Interior Bow stainless steel rail

Stainless Steel boat Side Door trim

Boat Interior Bow stainless steel rail

Table Stainless Steel Frame with Teak Top

Stainless Steel grab rail on boat deck surface

Holloway America

🇺🇸 United States

2005

51-100 people

Manufacturer/Service Company

Established brand

Product customization

Industry association member

Shipments

Key customer

TECAN PRECISION MACHINING

Key market

🇺🇸 United States

Description

Holloway America is a US-based manufacturer and contract manufacturer specializing in the custom fabrication of precision ASME stainless steel tanks, pressure vessels, and equipment. Established in 2005, the company operates from Springfield, Missouri, with a workforce of 51 to 100 employees. They design and build ASME Pressure Vessels ranging from 6 inches to 144 inches in diameter, utilizing industry-grade materials such as Type 300 Series Stainless Steel and high nickel alloys including AL-6XN™, HASTELLOY™, Inconel, and titanium. Their comprehensive product portfolio includes mixing tanks, WFI tanks, bioreactors, fermentation vessels, formulation vessels, CIP tanks, portable tanks, atmospheric tanks, and single-use tanks, alongside extensive tank components like manways, fittings, O-rings, and gaskets. Holloway America is certified with ASME Section VIII, Div. 1 “U”, ASME BPE standards, CE/PED, National Board “R” repair stamp, API-620, API-650, ASME B31.3 process piping, CRN - Canada, MOM - Singapore, OSHA, CSE, USDA, FDA, and 3A standards. They also provide field services for vessel repair, modifications, maintenance, and polishing, serving critical applications in the pharmaceutical, biotech, food and beverage, and chemical industries. Notable clients include Amgen, Exxon Mobil, Genentech, and GE Healthcare.