O'Neal Manufacturing Services

Louisville, KY

Fabricates metal components and welded sub-assemblies for original equipment manufacturers and contractors. Offers steel fabrication, tube processing, plasma and laser cutting, welding, machining, kitting and assembly, painting and powder coating, and forming and bending. Operates nine fabrication facilities across North America.

O'Neal Manufacturing Services

Indianapolis, IN

Multi-step metal fabrication and complex welded assemblies for global OEMs, with a 203,000 sq. ft. facility in Indianapolis. Equipment includes fiber laser and plasma cutting, CNC machining, tube processing, and CNC angle line. Serves rail, infrastructure, energy, material handling, construction equipment, and agricultural equipment industries.

O'Neal Manufacturing Services

Burlington, KY

Steel fabrication and welded sub-assemblies with multistage processing and repetitive parts production capabilities. Services include plasma cutting, laser cutting, tube processing, machining, welding, laser welding, forming and bending, painting and powder coating, and kitting and assembly. Serves large original equipment manufacturers and contractors from nine facilities across North America.

O&S Mobile Welding Fabrication

Mt Prospect, IL

Welding and custom metal fabrication serving residential, commercial, industrial, and automotive projects across the Chicago area. Offers 10+ welding processes including GMAW, GTAW, FCAW, and SMAW, plus plasma cutting, structural repairs, truck and trailer services, and high-volume manufacturing. Provides mobile welding with same-day emergency service and AutoCAD design capabilities, working in mild steel, stainless steel, galvanized steel, aluminum, and cast steel.

Oaks Precision Fabricating Inc

Houston, TX

Precision sheet metal fabrication in stainless steel, mild steel, aluminum, and specialty metals. Capabilities include laser cutting, NC punching, forming, shearing, rolling, welding, and hardware insertion, with ASME-certified welders and nondestructive testing available. Serves oil and gas, aerospace, electronics, power generation, transportation, and communication industries from a 30,000-square-foot facility in Houston.

Ober & Sons Welding

Houston, TX

Structural steel fabrication and custom welding for the Houston area, offering in-house shop drawings, in-shop fabrication, and on-site installation. Capabilities include welding, cutting, grinding, plasma cutting, rolling, breaking, and shearing; also provides mobile and portable welding for repair work including trailers, fences, gates, and vehicles. Plasma cutting service handles stainless steel, steel, aluminum, bronze, and copper from 18 gauge up to 2 inch thickness for custom parts, signs, and logos.

OC Metals

Santa Ana, CA

OC Metals runs a custom metal fab shop in Santa Ana, CA. The shop builds steel parts and assemblies for trade and commercial customers.

Ocean State Iron Works

Pawtucket, RI

Precision machining and custom fabrication shop offering prototyping, custom metal fabrication, and repairs. Provides both in-shop and mobile welding services. Operator has over 4 decades of experience and works on complex custom projects.

Oceanside Iron and Steel Inc.

Oceanside, NY

Supplies dock hardware including pile hoops, pile guides, chain, shackles, rollers, brackets, and fasteners for waterfront and marine applications. Serves boating enthusiasts and waterfront owners across the five boroughs and Long Island with shipping available worldwide.

Oceanside Truck & Trailer

Jupiter, FL

Custom welding and metal fabrication for trailer repairs, truck accessories, and general welding projects. Handles routine maintenance through extensive repairs on all trailer types, and offers both in-shop and mobile services in Jupiter, Florida.

October 2025 - All-Steel Fabricating is now an AISC ...

Connecticut

Metal fabrication and machining in steel, stainless steel, and aluminum, including plate rolling, forming, plasma cutting, and welding. Operates a 35,000-square-foot facility with a 40-ton overhead crane, CNC press brakes up to 1,000 tons, a Flex CNC milling machine with a 72" × 240" bed, and a plasma table up to 2.5" plate. Serves wire rolling, power generation, water treatment, recycling, and plastic processing industries.

Odie Sheet Metal

San Jose, CA

Precision sheet metal fabrication from prototype development to production runs. Capabilities include welding, forming, plating, painting, and silk-screening.

Odyssey Industrial Systems

Houston, TX

Sheet metal fabrication with laser cutting, turret punch pressing, forming, bending, welding, powder coating, wet painting, and assembly services. Equipment includes Trumpf laser cutting and Amada turret punch press. Provides engineering support and project management from design through delivery.

Odyssey Precision Fabricating

Houston, TX

Sheet metal fabrication and welding shop offering laser cutting, punching, forming, bending, powder coating and wet paint finishing, welding, and assembly services. Equipped with Trumpf laser cutting and Amada turret punch press equipment. Provides engineering support and project management from design through delivery.

Oehlers Welding and Fabrication, Inc.

Buffalo, NY

Steel fabrication including plate rolling, forming, beveling, burning, angle/bar/beam rolling, and plate shearing. Welders work with stainless, monel, nickel alloys, copper, and carbon steel. Serves both large industrial and construction projects and smaller local contractors.

Oertel Metal Works

Davenport, IA

Full-service metal fabrication including laser cutting, CNC plasma with bevel head, welding (GMAW, GTAW, FCAW, SMAW, spot), press brake and roll forming, milling and turning, and surface finishing with media blasting and vibratory deburring. Offers design, custom prototyping, paint prep and coating, assembly, and field service. Works in steel, aluminum, stainless, galvanized, copper, and brass for mining, railcar, food service, recycling, agriculture, material handling, and construction.

Ogeechee Steel – AISC certified Fabricator and Erector

Savannah, Georgia

Structural steel fabrication and erection for commercial and institutional projects, serving general contractors across the southeastern United States. Handles projects ranging from 3 to 3,000 tons and offers in-house detailing, engineering, and design-build services. AISC certified fabricator and advanced steel erector with field equipment including cranes up to 90 tons, all-terrain lifts, and forklifts.

Ohio Steel Industries Inc.

Pataskala, OH

Structural steel fabrication, furnishing, and erection for buildings, bridges, and structures, serving general contractors and construction managers across the United States. AISC certified, with a 120,000 square foot facility. Also operates a contract manufacturing division fabricating metal products including riding mower attachments and utility trailers in sheet and tubular materials, and a plastics division providing extruded plastic products and profiles.

Ohio Structures, Inc.

Berlin Center, OH

Ohio Structures fabricates steel girders, beams, expansion joints, crossframes, and retrofit plates for bridge projects. The company operates an on-site coatings facility for shop blasting, painting, and thermal spray metalizing, with in-house control over detailing, fabrication, coatings, and transportation. AISC-certified for Intermediate (Major) Bridge Fabrication with endorsements for Fracture Critical and Sophisticated Paint, serving the Midwest and Northeast.

Ohio Wire Form Spring

Columbus, OH

Wire forming, springs, hooks, racks, and rod bending in any quantity with no minimum order. Offers design consulting and in-house tooling, and works from prototyping through production. Provides CNC machine optimization and four-slide services.

OIK Industries

Kalamazoo, MI

Custom metal fabrication in steel, stainless steel, and aluminum. OIK Industries produces architectural work, stairs, railings, gates, guard posts, ladders, and structural steel components.

OK Steel

Guthrie, OK

Steel supplier selling structural steel, metal roofing and siding panels, metal building kits, steel tubing and channel, rebar, roof trusses, fencing supplies, weld-on gates, and culvert pipe across Oklahoma. Offers free statewide delivery on most building kits and large orders. Also provides custom fabrication and welding supplies.

Oklahoma Custom Welding

Pryor, OK

OK Custom Welding provides structural steel fabrication, custom gates, and steel handrails in Oklahoma. Quality welding, durable builds, and custom metal solutions.

Old Anvil Speed Shop

Orange, CA

Custom vehicle fabrication and assembly, including sheet metal work, paint and body, chassis engineering and fabrication, custom wheels, upholstery, CNC machining, and 3D printing. Builds complete vehicles from start to finish.

Old Skool Sheet Metal Shop

Louisville, KY

Sheet metal fabrication of custom HVAC ductwork, precision fittings, and chimney caps. Serves HVAC contractors and homeowners in Louisville with made-to-specification work.

Old Sole Fabrication

Denver, CO

Metal fabrication and welding shop doing custom work in steel, stainless, bronze, nickel, aluminum, and Inconel. Services include TIG welding, fabrication, 3D printing, and custom jobs; recent work includes NASA prototypes, hydroelectric impellers weighing over 2,500 lbs, food-processing sanitary equipment for Coors, and off-road vehicle modifications.

Old South Lighting & Ironworks

Baton Rouge, LA

Old South Lighting & Ironworks builds custom ironwork and structural steel out of Baton Rouge, LA. They handle railings, gates, and decorative metal for homes and commercial sites.

Old World Building Services LLC

Edmond, OK

Custom metal fabrication serving architects, interior designers, and construction firms. Specializes in ornamental iron gates, handrails, and wood-and-metal fencing. Works on design-driven projects for commercial and residential clients.

Old World Iron

Oklahoma City, OK

Decorative and wrought iron fabrication producing custom stair rails, gates, fireplace screens, mailboxes, and architectural iron elements. Works with traditional forging techniques and modern machinery to create hand-crafted pieces for builders, architects, designers, and homeowners in Oklahoma City and surrounding areas.

Olmeca Steel Corporation

El Monte, CA

Olmeca Steel Corporation handles structural steel and custom fabrication out of El Monte, CA. Project work covers commercial structural packages and custom builds across the LA basin.

Olson Iron Security Screens, Iron Gates, Security Doors Las Vegas

Las Vegas, NV

Custom wrought iron fabrication for residential and commercial projects, including gates, security doors and screens, fencing, railings, and stairs. Works in wrought iron, stainless steel, aluminum, brass, and copper, and offers electric gate operators with keypads and push button controls.

Olson Sheet Metal Works Inc

Minneapolis, MN

Custom metal fabrication in brass, copper, aluminum, steel, zinc, and stainless steel. Produces railings, hoods, staircases, custom furniture, doors, gates, copper roofs, planter boxes, and hardware. Performs complete layout, cutting, welding, and forming in-house.

Olson Spiral Stairs

Las Vegas, NV

We design, fabricate and install custom wrought iron spiral staircase and railings for residential and commercial customers of Southern Nevada. Olson Iron, a custom wrought iron manufacturer and fabrication company located in Las Vegas, Nevada, provides Free Custom Wrought Iron Work Estimate to residential and commercial businesses of Southern Nevada - specifically, the City of Las Vegas, Summerlin, Boulder City, Henderson, Pahrump, Spring Valley, Paradise, Centennial and North Las Vegas.

Olympic Industries

Cordova, TN

Sheet metal fabrication and welding shop in a 50,000-square-foot facility in Cordova, TN. Offers laser cutting, design and engineering, custom progressive dies and tools, and metal stamping for both prototype and production work.

Omaha Welding Institute LLC.

Omaha, NE

At Omaha Welding Institute, we are dedicated to changing lives through the art of welding. We believe in providing high-quality education and training to aspiring welders, empowering them to build successful careers in the welding industry.

OMC Tank Repair Shop - Stainless Steel Fabrication, Custom Fabrication, Fuel Tank Repair

Turlock, CA

Mobile welding and tank repair, specializing in aluminum, steel, and titanium welding for fuel tank repair, gas tank repair, tanker repair, and modifications including rollovers and wrecks. Operates a crew of 13 licensed and bonded technicians with over 32 years of experience, serving a 30-mile radius around Turlock, CA.

OMCO Fabrication

Talladega, AL

Custom metal fabrication and contract manufacturing in steel, stainless steel, and aluminum, serving OEMs and industrial customers with prototypes through production runs. Equipment includes a 25-ton CNC punch press, laser cutting to 0.005″ tolerances and 5/8″ material thickness, plasma and oxy-fuel cutting to 1.5″ thick, CNC roll forming for pipe and ductwork, and MIG, TIG, stick, flux-core, and robotic welding with AWS D1.1/D1.2/D1.3 certified welders. Also offers in-house finishing with spray painting, grit blasting, and powder coating in a 10,000 square foot facility.

OMD Welding Services

Chandler, AZ

Robotic welding services for both high and low volume production, offering automated metal joining with precision and repeatability. The shop uses robotic welding equipment with skilled oversight to deliver consistent quality and fast cycle times, and has capacity for volume production projects.

Omega Ironworks

Mesa, AZ

Structural steel fabrication, erection, and detailing for both structural and ornamental applications. Offers structural buildings, stairs and rails, canopies, fences and gates, plus electrostatic painting and masonry work including perimeter walls, retaining walls, and concrete footings. Employs certified welders in stick and wire processes and is willing to travel for jobs.

Omega Metalworks | Custom Metal Fabrication Colorado Springs

Finish Colorado Springs, Colorado

Structural steel fabrication and supply for commercial, industrial, and manufacturing sectors, serving projects inside and outside Colorado. Provides Universal Beams, Columns, Hollow Sections, and Structural Connections, along with planning, drafting, and 3D design using advanced technology. Offers surface treatment including painting, powder coating, hot dip galvanizing, and sandblasting, plus delivery and installation with certified teams.

On Demand Metal Processing | Laser Tube Cutting | Precision ...

Las Vegas, Nevada

Laser tube and flat sheet cutting using TRUMPF fiber laser equipment, along with press brake forming for precision bending. Also offers post-processing services including deburring, edge rounding, and surface finishing on mild steel, stainless steel, aluminum, copper, brass, titanium, and galvanized materials. Handles no-minimum orders with 3-5 day lead times.

On Site Field Welding & Fabrication

Kirkland, WA

Field welding and structural steel fabrication for commercial and residential construction across the Pacific Northwest. WABO and AWS D1.1 certified for structural welding, beam connections, columns, stairs, and mezzanines, with mobile crews and in-shop capabilities. Handles light-to-medium structural work of 5–20 tons, metal cutting and drilling, equipment repair, and custom aluminum fabrication with shop drawings and third-party inspection documentation.

On The Rail Welding, LLC

Phoenix, AZ

Metal fabrication and welding specializing in MAG standard and storm drainage welding requirements. Produces safety railing, grates, frames, trash racks, and access barriers. Offers competitive pricing and fast turnaround.

On Time Fab | Metal Fabrication Contractor in Owensboro, KY

Owensboro, Kentucky

Custom metal fabrication and field welding for industrial and commercial projects in carbon steel, stainless steel, and aluminum. Handles custom components, structural assemblies, consumable replacement parts, design and engineering, and on-site installation and millwright services. Serves manufacturing, chemical processing, plastics, metals recycling, and food processing industries within a 75-mile radius of Owensboro, Kentucky.

One Chance Mobile Welding Services

Denver, CO

One Chance Mobile Welding Services runs a mobile welding rig out of Denver, CO. They handle on-site welding and repair for contractors, fleets, and equipment owners.

Onesourcegrills

Detroit, MI

Onesourcegrills builds custom grills and outdoor fabrication out of Detroit. Each piece is built to order for backyard pitmasters and small restaurants.

Onsite Welding and mechanical repair LLC

Roseville, MI

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Onsitewelder

Cincinnati, OH

Industrial welding and fabrication services, operating for over 50 years. The shop serves projects ranging from industrial welding to fabrication work.

Oostman Fabricating & Welding

Westmont, IL

Welding and fabrication in all types of materials, with in-house machining and water-jet cutting. Handles tig, mig, and gas welding, along with CNC milling, drilling, grinding, and lathe work, plus a 6-by-12-foot water-jet table. Specializes in prototype work, short runs, and production runs from concept to finish, with finishing services including anodizing, plating, and painting.

Optimized Welding Services LLC

El Paso, TX

Custom metal fabrication involving cutting, bending, and shaping metal to specification, plus pipe welding using MIG and TIG processes and CNC plasma cutting of electrically conductive materials. Also performs aluminum welding with TIG and MIG.

Orange Boxx​ Fabrication

Greensboro, NC

Orange Boxx Fabrication designs and manufactures custom and pre-fabricated MOLLE organization panels and adaptable personal storage devices for off-road vehicles, including solutions for FJ Cruisers, Toyota 4Runners, Land Cruisers, and Nissan Xterras. They offer both economy and custom configurations with options for color choices and logo designs, with all products made in the USA.

Orange County Mobile Mechanics

Huntington Beach, CA

Orange County Welding

Santa Ana, CA

Metal fabrication and welding for private commercial and public works projects in Orange County. Offers both shop and portable welding services, with custom fabrication capability. Holds C60 welding and C61 specialty licenses, and D1.1 and AWS certifications.

Oregon Swiss Precision, Inc. – Precision CNC Machining ...

Avenue Grants Pass, Oregon

CNC turning, milling, and Swiss-type machining for precision parts in aerospace, electronics, hydraulics, and other industries. Operates 22 turning centers for parts up to 10 inches diameter, 9 milling centers, and 18 Swiss-type automatic lathes for small parts from 1/8 to 1-1/4 inches. Offers CAD design, 3D printing, finishing services, and works in stainless, carbon steel, aluminum, aircraft alloys, and other materials.

Origin Designs, LLC

San Antonio, TX

Custom metal fabrication and welding shop in San Antonio serving businesses and individuals across North and South Texas. Offers welding with GMAW, FCAW, SMAW, and GTAW techniques in carbon steel, stainless steel, aluminum, and other materials, along with CNC cutting (laser, waterjet, plasma), 3D printing, and CAD drafting services.

Orlando's Metal Shop

Santa Ana, CA

Metal fabrication and welding shop offering CNC machining, bending, welding, and custom fabrication work. The shop has 14 years of experience in the metal industry.

Orleans Steel Building Material

New Orleans, LA

Manufactures and supplies metal building materials for residential and commercial construction, including metal roofs, fence panels, and gates. Offers custom fabrication and provides both materials and installation for projects.

Ornamental Iron of Houston

Houston, TX

Custom fabrication and installation of wrought iron and stainless steel railings, gates, staircases, and door grills for domestic and commercial projects in the Houston area. Works in wrought iron and stainless steel, including cable railings and spiral staircases. Serves homebuilders, construction companies, and retail customers.

Ornamental Security, Inc.

Morrow, GA

Ornamental Security, Inc. offers security solutions for homes and businesses.

Ornamental Specialties Inc.

Indian Trail, NC

Ornamental Specialties Inc. fabricates custom wrought iron products for residential properties, including handrails, fences, gates, and balconies. They work with homeowners to create standard and custom pieces.