RiAlto Manufacturing has been that partner for manufacturers across Ohio since 1981. Our 71,000-square-foot fabrication and machining facility sits in Marion, Ohio, about 55 miles, roughly a one-hour drive east of Lima via US-30. From there, our team supplies custom metal fabrication, precision CNC machining, laser cutting, and welding services to companies throughout Lima, Allen County, and the surrounding I-75 corridor.
Lima’s manufacturing economy is diverse; by design, automotive engine production, defense and military vehicle manufacturing, consumer goods, energy and refining, and food processing all share the local industrial base. That mix means the companies operating here need a fabricator who can move between part types and tolerance requirements without missing a beat, not a shop that only knows one kind of job.
RiAlto’s team behind the work works directly with engineering and production staff at Lima-area companies to take a project from a prototype through full production volume. Because laser cutting, CNC machining, welding, and custom machine building all happen under one roof in Marion, Lima customers get a full range of shop capabilities managing the job from quote to delivery, instead of splitting one project across three or four specialty vendors and hoping the tolerances still match when the parts arrive.
If you’re supplying into Lima’s energy- or defence-related manufacturing base, you already know the bar is high. The Cenovus Lima Refinery has run continuously since 1886, one of the oldest operating refineries in the country, and it’s part of the U.S. defence fuel supply chain today. Suppliers feeding that ecosystem, and the automotive and defence contractors built up around it, don’t have room for a fabricator that can’t back a tolerance with an audited quality system.
That’s the standard RiAlto holds every Lima order to:
Precision-machined components produced on 5-axis and dual-spindle HAAS machining centres, built to hold tight tolerances for automotive, defence-supply, and industrial equipment work common to the Lima market.
Accurate, repeatable laser-cut sheet and plate parts for both prototype quantities and full production runs.
MIG and TIG welding paired with custom fabrication to produce durable, production-ready assemblies.
Equipment and tooling engineered around your specific process to improve throughput and repeatability.
Carts, racks, and handling equipment built to your exact specifications.
Design support that improves manufacturability before a part ever reaches the shop floor.
If your current setup means a cutting shop for blanks, a separate welder for assembly, and a third vendor for machining, you already know where things go wrong a tolerance that was fine leaving vendor one drifts by the time it reaches vendor three, and nobody owns the fix. Take a look at examples of finished work built without that risk in the first place.
Send us the print instead, and here’s what changes:
Automotive
Agriculture
Medical Equipment
Food Processing
Appliance Manufacturing
Energy/Solar
Plastics
Paper Products
Glass Manufacturing
Steel Processing
Want to see the shop before you send a drawing? Watch our shop floor in action.
Skilled trade talent is tight across every plant in the Lima corridor, and we feel that pull from Marion too. If you know someone who belongs on a shop floor or you’re looking yourself, explore career opportunities here.
And if you want more than a location page’s worth of detail material selection, tolerancing notes, real shop-floor decisions- read more manufacturing insights from our team.
RiAlto’s service area around Lima covers the city proper ZIP codes 45801, 45804, and 45805, along with surrounding Allen County communities and the I-75 manufacturing corridor running through northwest Ohio. If your facility sits anywhere along that corridor and you’re searching for a metal fabrication shop near Lima, Ohio, or a CNC machine shop that understands Allen County’s industrial base, our Marion team is close enough to be responsive and experienced enough to handle complex work.
Our Marion, Ohio, facility is approximately 55 miles from Lima, about a one-hour drive via US-30.
CNC machining, laser cutting, MIG and TIG welding, custom metal fabrication, custom-built machines, assembly line fixtures, and material handling products are all produced at our Marion facility and shipped or delivered to the Lima market.
Yes, We regularly support automotive, industrial equipment, energy, agriculture, and food processing manufacturers throughout the Lima and Allen County region, reflecting the diversified industrial base the area is known for.
Yes, RiAlto Manufacturing is ISO 9001 certified, which means every job, including work shipped to Lima, Ohio, follows a documented, audited quality process.
Beyond Lima proper, we regularly serve manufacturers throughout Allen County and along the I-75 corridor in northwest Ohio, in addition to our broader Ohio service area covering Columbus, Mansfield, Findlay, Marysville, and other markets.
Ready to start a project conversation for custom metal fabrication, CNC machining, laser cutting, or welding for your Lima-area facility? Call (740) 914-4230, or email sales@rialtomfg.com with your drawings or specifications. You can also browse our other Ohio markets we serve.
“Committed to customer satisfaction through the continual improvement of our products, processes and services.”
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