Heavy Fabrication Welding in Ontario, Canada
Seaborn Manufacturing provides heavy fabrication services for OEMs, equipment manufacturers, infrastructure projects and engineered products across Ontario and all of Canada. From heavy steel plate fabrication to welded structural assemblies, we combine laser cutting, forming, machining, welding, and assembly under one roof to make it easy for you.
Heavy Fabrication Welding Services for Industrial Materials
Heavy Metal Welding and Fabrication
Heavy Plate Cutting and Welding
Structural and Heavy-Equipment Weldments
Heavy Fabrication Welding Capabilities, Tolerances and Accuracy
| Capability | Specification |
|---|---|
| Materials | Carbon steel, stainless steel, aluminum |
| Laser Cutting | Sheet and plate laser cutting |
| Carbon Steel Thickness | Up to 2.0" plate |
| Stainless Steel Thickness | Up to 1.0" plate |
| Aluminum Thickness | Up to 1.0" plate |
| Tube Laser | To 9” diameter and ¼” wall |
| Forming & Bending | CNC press brake forming |
| Welding Processes | MIG, TIG, robotic welding, laser welding |
| Machining | CNC milling and turning |
| Assembly | Mechanical assembly and sub-assembly |
| Typical Laser Tolerance | ±0.005" depending on material and thickness |
| Press Brake Accuracy | ±0.5° achievable on suitable parts |
| Maximum Assembly Size | Up to approximately 10' × 20' |
| Maximum Assembly Weight | Up to 10,000 lb |
| Quality Control | CMM inspection and production fixtures |
| Certifications | CWB 47.1 & 47.2 Division 3 |
| Final capabilities for your project will depend on material grade, geometry, thickness, and production requirements. |
Why Choose Seaborn Manufacturing for Heavy Fabrication Welding?
Heavy Fabrication Welding Across Ontario and Canada
Heavy Fabrication Waterloo
Heavy Fabrication Cambridge
Heavy Fabrication Kitchener
Heavy Fabrication Guelph
Heavy Fabrication Toronto
Heavy Fabrication Hamilton
Heavy Fabrication London
FAQ about our Heavy Fabrication Welding Services
Heavy fabrication welding is the fabrication and welding of heavier metal plates, structural sections, and assemblies for industrial use. It typically involves materials thicker than standard sheet metal work, often starting above 1/4″ or 6 mm.
The process can include cutting, forming, fitting, welding, machining, inspection, and final assembly. It is used when components must carry load, resist vibration, or perform in demanding environments such as heavy equipment, mining, infrastructure, material handling, or industrial machinery. Common examples include frames, skids, machine bases, supports, brackets, and heavy industrial weldments.
Seaborn supports heavy fabrication welding for thick industrial materials, including carbon steel plate up to 2″ through in-house laser cutting. Stainless steel and aluminum plate can be processed up to 1″, depending on part geometry and project requirements.
Weldable thickness depends on material grade, joint design, welding process, drawing requirements, and final application. For heavy plate weldments, Seaborn can cut, form, fit, weld, machine, inspect, and assemble the required components in-house. Send your drawings and specifications so the correct fabrication plan can be reviewed.
Seaborn uses MIG/GMAW, TIG/GTAW, robotic welding, and laser welding where suitable for heavy fabrication projects. MIG/GMAW is commonly used for strong, efficient welds on industrial steel components.
TIG/GTAW supports applications where weld control, appearance, or material requirements are more specific. Robotic welding helps improve repeatability for recurring production weldments and assemblies. Laser welding can support precise welding applications when the material and joint design are suitable.
Yes, Seaborn supports heavy fabrication welding with CWB 47.1 and 47.2 certified welding capabilities. These certifications are important for structural and industrial projects where weld quality, procedure control, and documentation matter.
CWB-certified welding helps engineers and purchasers reduce risk when sourcing load-bearing components. Certification requirements should be reviewed during quoting so the correct welding procedures and documentation expectations are aligned with the project.
Heavy fabrication welding is used in industries that need strong, durable, and load-bearing metal assemblies. Common sectors include industrial machinery, heavy equipment, mining equipment, construction, infrastructure, transportation, agriculture, power generation, automation, and material handling.
These industries often require thick plate, structural components, frames, equipment skids, machine bases, and welded assemblies. Seaborn supports these requirements with in-house cutting, forming, welding, machining, inspection, and assembly.
Yes, Seaborn manufactures structural components and heavy-equipment weldments such as frames, base plates, generator skids, brackets, machine bases, supports, and welded assemblies. These parts are built to customer drawings and controlled for fit, strength, and repeatability.
In-house plate cutting and forming help improve weld preparation prior to assembly. Welding, machining, inspection, and mechanical assembly can then be coordinated within the same production flow.
For the most accurate heavy fabrication quote, include drawings, material grade, thickness, quantities, weld specifications, tolerances, machining requirements, finishing requirements, inspection requirements, and target delivery date. PDF, and DXF files are helpful. STp files are typically not as helpful until work begins. If the assembly interfaces with other parts, include mating dimensions or related assembly information as well.