Sheet Metal Fabrication
From flat patterns to welded assemblies—laser cutting, CNC bending, stamping, and fabrication for enclosures, brackets, and frames. Prototype one-offs through production lots with clear RFQ packaging.
Sheet Metal Processes
Laser Cutting
Precision flat blanks and nested profiles from sheet stock.
- •Steel, stainless, aluminum
- •Tight kerf profiles
- •Fast nesting
- •Proto to production
CNC Bending
Press-brake forming for flanges, boxes, and complex bends.
- •Accurate bend angles
- •Multi-bend sequences
- •Enclosure forming
- •Hardware prep
Stamping
Progressive or stage tooling for higher-volume stamped parts.
- •Repeatable blanks
- •Piercing & forming
- •Volume economics
- •Secondary ops
Welding & Fabrication
MIG/TIG and assembly for frames, brackets, and welded structures.
- •MIG / TIG options
- •Fixture welding
- •Grind & finish
- •Assembled kits
Custom Sheet Metal
Full custom parts—cut, bend, weld, finish, and hardware install.
- •Enclosures & panels
- •PEM / clinch hardware
- •Powder coat / anodize
- •Export packaging
Fabrication Strengths
Practical shop capabilities for export programs
Process Range
Volume Flexibility
Finish Options
Buyer Support
Typical Applications
Enclosures & Chassis
- •Electrical boxes
- •Control panels
- •Server chassis
- •Machine guards
- •Instrument housings
Brackets & Mounts
- •Equipment brackets
- •Sensor mounts
- •Cable trays
- •Hinges & straps
- •Mounting plates
Industrial Equipment
- •Frame weldments
- •Guards & covers
- •Hopper panels
- •Conveyor parts
- •Safety fencing panels
Electronics & Telecom
- •Rack panels
- •Heat sink plates
- •Shield cans
- •Antenna brackets
- •Outdoor cabinets
Automotive & Mobility
- •Interior brackets
- •Battery trays (non-cert claim)
- •Body reinforcement pilots
- •Duct flanges
- •Fixture plates
Architectural / OEM
- •Decorative panels
- •Signage blanks
- •Furniture frames
- •Display stands
- •Custom fixtures
Materials & Thicknesses
Common sheet grades we cut, bend, and weld
Carbon Steel
- • CRS / SPHC
- • HR plate (select)
- • Galvanized sheet
- • Pickled & oiled
Stainless
- • 304 / 304L
- • 316 / 316L
- • 430 (select)
- • Brushed finishes
Aluminum
- • 5052
- • 6061 sheet
- • Other alloys on request
Copper & Brass
- • Copper sheet (select)
- • Brass sheet (select)
- • Busbar-adjacent flats (see product pages)
Finishes
- • Powder coat
- • Anodize (Al)
- • Zinc plate
- • Passivate (SS)
- • Brush / polish
Hardware
- • PEM nuts / studs
- • Rivets
- • Hinges
- • Latches
- • Gaskets (assembly)
Frequently Asked Questions
What sheet thicknesses can you work with?
Common work covers roughly 0.5–6 mm for laser + bend on steel/aluminum/stainless; thicker plate and specialty alloys are quoted case-by-case. Call thickness and grade on the RFQ.
Do you need flat patterns or 3D models?
Either works. STEP with formed model is preferred; DXF flat patterns help when bend deductions are already locked. We can review K-factor assumptions on request.
When should I use stamping vs laser + bend?
Laser + bend for prototypes and low–mid volumes. Stamping when annual volume supports tooling and piece-price matters. We can bridge with laser until dies are ready.
Can you install PEM nuts and hardware?
Yes—clinch nuts, studs, standoffs, and rivets are common on custom sheet metal programs. Call hardware callouts on the drawing.
What welding processes do you offer?
MIG and TIG are typical for steel and stainless; aluminum welding is project-based. Fixtured weldments and grind finishes can be quoted.
What surface finishes are available?
Powder coat, wet paint, zinc plating, anodize (aluminum), brush/polish, and passivation for stainless—availability depends on alloy and part size.
What tolerances should I expect?
Laser profiles and brake angles follow shop standards unless CTQs are marked. Tight fits often need secondary machining or adjusted bend allowances—call critical dims.
Do you claim aerospace or nuclear sheet-metal certifications?
No. We fabricate industrial and commercial sheet metal with soft capability language. Any regulated program requirements must be stated in the PO and QA plan.
Can you ship welded assemblies overseas?
Yes. Partsproto packs from China for overseas buyers—knock-down kits or welded assemblies with protective packaging.
How fast can prototypes ship?
Simple laser-cut and bent parts often move in about a week after DFM freeze; welded and coated assemblies take longer. Ask for rush options on the quote.
Sheet metal fabrication hub—what we offer
This hub covers laser cutting, CNC bending, stamping, welding, and full custom sheet metal assemblies.
Use child pages for process-specific DFM; use this page to choose cut/form/stamp/weld paths and RFQ packaging.
Partsproto fabricates in China for overseas buyers—material, finish, hardware, and export packing are quoted together.
- → Enclosures, brackets, and panels from sheet stock
- → Prototype laser+bend before stamp tooling
- → Welded frames and fabricated assemblies
- → Hardware-installed custom sheet metal kits
How a sheet metal program runs
Process select
Laser+bend vs stamp vs weldment based on volume and geometry.
DFM & flat pattern
Bend reliefs, hole-to-bend, and finish notes locked with quote.
Cut & form
Laser blanks, brake sequences, or stamp stages.
Join & finish
Weld, hardware, powder coat / plate as specified.
Inspect & ship
Dimensional checks, packing, overseas freight.
DFM tips before you RFQ sheet metal
- •Keep hole-to-bend distance adequate—too close distorts holes.
- •Add bend reliefs on flanges that meet; avoid trapped corners.
- •Call grain direction for cosmetic brushed stainless.
- •Specify hardware before coating when insert/clinch is required.
- •For volume, ask when stamp tooling pays back vs laser nesting.
Inspection & QC
- ✓Flat pattern / formed dimensions on CTQs.
- ✓Bend angle checks on critical flanges.
- ✓Weld visual criteria when assemblies are ordered.
- ✓Coating thickness / adhesion notes when specified.
- ✓Export packing photos on request.
Lead time & batch sizing
Simple laser-cut blanks can be quick; multi-bend boxes with powder coat typically need more calendar days. Stamp tooling adds upfront time then lowers piece price. Request 10 / 100 / 1,000 breaks for planning.
Ready to Fabricate Sheet Metal Parts?
Send flat patterns or 3D CAD, material, thickness, finish, and quantity—we return process notes and lead time.