Manufacturing process

Sheet Metal Fabrication

Sheet metal fabrication turns flat sheet into enclosures, brackets, panels and frames by cutting, bending and joining — often finished and assembled at the same supplier.

Process overview

Sheet metal fabrication combines processes such as laser or profile cutting, bending, forming, punching and joining to manufacture parts and assemblies from flat sheet materials. It supports enclosures, brackets, panels, frames and more complex fabricated products across prototype and production quantities. Requirements may include material and thickness, bend geometry, tolerances, welding, surface treatment and inspection criteria.

A typical route starts with a flat blank cut by fibre laser, punching or waterjet, followed by bending on a press brake or panel bender. Hardware such as press-in nuts and studs is inserted, parts are welded or riveted into assemblies, and the result is powder coated, galvanised or plated. Because cutting and bending run directly from CAD data with standard tooling, sheet metal is economical from prototypes to recurring batches without part-specific dies.

Design choices strongly affect cost and quality. Bend radii, flange lengths and hole-to-bend distances need to suit the material thickness and the tools available, and consistent inside radii across a part reduce tool changes. Formed features usually carry wider tolerances than machined ones, and variation accumulates over several bends, so functional dimensions are best referenced from a single datum.

For very high, stable volumes the same parts may move to progressive-die stamping; thick plate and heavy welded structures typically belong to industrial fabrication.

Typical capabilities & what manufacturers can produce

What manufacturers can produce

  • Electrical enclosures, control cabinets and housings
  • Machine guards, covers, doors and panels
  • Brackets, chassis and mounting plates
  • Welded frames and sub-assemblies from sheet and tube
  • Laser-cut blanks and flat parts
  • Powder-coated or galvanised assemblies with inserted hardware

Capabilities under this process

Suitable materials

Materials commonly used with this process — an editorial reference, not a statement about facilities in the Metraxio network. Suitability always depends on the part and its application.

Relevant industries

Industries whose Metraxio industry guides list Sheet Metal Fabrication as a common process, with the typical use in each.

What buyers should specify

The details that make Sheet Metal Fabrication quotes comparable and let facilities be assessed on the right criteria.

3D model and flat pattern
STEP of the formed part; a flat DXF helps if available. Bend radii and bend directions should be visible.
Material and thickness
For example cold-rolled steel, pre-galvanised steel, stainless 304 or aluminium 5754 — with the thickness of each part.
Bend details
Inside bend radius and the formed dimensions that are functionally critical.
Joining and hardware
Welding (visible or hidden, ground or as-welded), riveting, and the type and size of press-in hardware.
Finish
Powder coat colour (RAL) and gloss, galvanising or plating, and areas to mask.
Cosmetic requirements
Which faces are visible and whether scratches, tool marks or protective film matter.
Quantity and delivery form
Batch size, annual volume, and whether parts ship loose, as kits or assembled.

On Metraxio these details become a structured manufacturing requirement. Processes, capabilities, materials, certifications and part size are checked against facility profiles; tolerances, finishes and inspection details travel with your drawings and are reviewed during quoting rather than used as automatic filters.

Frequently asked questions

How is sheet metal fabrication different from metal stamping?

Fabrication uses general-purpose equipment such as lasers and press brakes and suits low to medium volumes and changing designs. Stamping uses part-specific dies and becomes economical at higher, stable volumes.

Which sheet thicknesses are typical?

Much sheet-metal work falls roughly between 0.5 and 6 mm, depending on material and machine capacity. Thicker plate is usually handled by industrial fabricators.

Can the same supplier coat and assemble the parts?

Many sheet-metal suppliers offer powder coating, hardware insertion and assembly, in-house or through partners. Including this scope in the requirement keeps quotes comparable.

Sheet Metal Fabrication by country

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