Sheet metal drawing: flat pattern with bend lines and press brake tooling

Sheet Metal Fabrication

Cut. Bend. Weld. Shipped in 5 days.

4 kW fiber laser cutting, Amada press-brake bending, TIG/MIG welding, PEM hardware insertion, powder coating — all under one roof. Enclosures, chassis, brackets and panels from prototype to 10,000 units.

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Sheet metal & fabricationWuxi, ChinaMOQ 1 partDFM review included

Technical plate for Cut. Bend. Weld. Shipped in 5 days.

How we run it

Sheet metal

From flat stock to finished painted assembly — every step happens in our Wuxi facility, managed by a single project engineer. No runner jobs across three different shops.

3-7 daysTypical lead time

MOQ 1No minimum quantity

<4 hQuote response

ISO 9001Quality system

01 · Capabilities

End-to-end sheet metal, in-house.

Fiber Laser Cutting

Precision cuts on steel up to 20 mm, stainless 12 mm, aluminum 10 mm. Kerf ±0.05 mm. Works from DXF flat patterns. Faster and cleaner than plasma; more accurate than shearing.

CNC Press Brake Bending

High-precision bends to ±0.1 mm linear, ±0.5° angular. 170-ton capacity, 3-meter length. Tool library covers 0.5–90° bends, joggles, hems, seams. CNC backgauge for repeatability.

Hardware Insertion

PEM studs, nuts, standoffs, captive fasteners, self-clinching rivnuts. Installed with hydraulic presses and proper anvil tooling. Essential for threaded assemblies without through-holes.

Welding & Joining

TIG (AC/DC) for precision stainless and aluminum. MIG for production steel. Resistance spot welding for sheet joins. All to AWS standards. WPS/PQR documentation on request.

Powder Coating

Pretreat → electrostatic powder → IR cure. Full RAL/Pantone library. Textures: smooth, fine, sand, hammer. Durable, UV-stable, rated for outdoor applications.

Wet Paint & Finishing

Custom color match, clear coats, textured finishes, anti-glare for displays. 2K polyurethane for automotive-grade durability. Pad printing and silk screen for logos.

From flat stock to finished painted assembly — every step happens in our Wuxi facility, managed by a single project engineer. No runner jobs across three different shops.

02 · Materials

Sheet materials & thicknesses.

Material	Thickness range	Typical use	Finishes
Mild Steel (SPCC, Q235)	0.5 – 20 mm	Brackets, weldments, chassis	Zinc plate, powder coat, paint
Cold-Rolled Steel (CRS)	0.5 – 6 mm	Enclosures, panels, frames	Powder coat, paint
Galvanized (SECC, SGCC)	0.5 – 3 mm	Outdoor enclosures	Powder coat over galv
Aluminum 5052	0.5 – 10 mm	Marine, chassis, flexible	Anodize, powder, brushed
Aluminum 6061	1 – 10 mm	Structural, machined-weld	Anodize Type II/III
Stainless 304	0.5 – 12 mm	Food, medical, general	#4 brushed, bead blast, passivate
Stainless 316L	0.5 – 12 mm	Marine, chemical, surgical	Electropolish, passivate
Copper C110	0.5 – 6 mm	Bus bars, heatsinks	Tin plate, clear lacquer
Brass	0.5 – 6 mm	Decorative, electrical	Polish, clear lacquer
Spring Steel	0.3 – 3 mm	Flex brackets, clips	Oil, nickel plate

03 · DFM

Sheet metal design rules that save money.

Minimum bend radius

Keep R ≥ material thickness. Smaller radii cause cracking. Aluminum 5052 needs R ≥ 1.5t for grain-cross bends.

Hole-to-edge distance

Keep holes at least 2× material thickness from any edge or bend. Closer, and the edge will tear or dimple during bending.

Hole-to-bend distance

Holes must be at least 3× thickness from a bend line, or they will deform into slots. Use slots if they must be close.

K-factor consistency

We use K=0.33 for mild steel, K=0.40 for aluminum. Consistent unfolding from the start prevents surprises in finished dimensions.

Weld joint prep

Specify filet, groove or butt weld. For groove welds >5 mm, include V or J prep in the drawing. Saves 30% of welding time.

Five rules that will keep your part bendable, weldable, and affordable. We flag all five in our free DFM review before you commit to production.

04 · Applications

Parts we ship every week.

Server & IT Enclosures

Rack-mount chassis, NAS cases, networking equipment. 1U–4U formats. Precise EMI/RFI shielding.

Electrical Control Cabinets

IP54/IP65 rated enclosures for PLC panels, industrial controls, motor drives. Cable management plates.

Medical Device Chassis

316L stainless, electropolished, welded to hygienic standards. Class I–II device housings.

EV Battery Packs

Welded aluminum 5052 trays with thermal management. Integrated hardware inserts.

Robotics Frames

Lightweight 6061 aluminum chassis. Precision mounting holes for actuators and sensors.

Solar & Renewable

Galvanized steel mounting racks, powder-coated for 25-year outdoor rating. Anti-theft fasteners.

Architectural Panels

Brushed stainless, anodized aluminum, custom textures. Aesthetic joinery, no visible fasteners.

Custom Brackets & Frames

One-off prototypes, weldments, weld-pre fixtures, low-volume production hardware.

FAQ

Cut — questions

What sheet metal thicknesses can you process?

Fiber laser cutting handles 0.5 mm to 20 mm steel, 0.5 mm to 12 mm stainless, 0.5 mm to 10 mm aluminum. Press brake bending is precise from 0.5 mm to 6 mm. Thicker plates (up to 25 mm) can be waterjet cut and welded for heavy-duty weldments.

What sheet metal materials do you work with?

Mild steel (SPCC, SPHC, Q235), cold-rolled steel (SPCC-SD), galvanized steel (SECC, SGCC), aluminum (5052, 6061, 1100), stainless steel (201, 304, 316L), copper, brass, spring steel, titanium. Standard sizes stocked; custom grades sourced in 3–5 days.

What tolerances can you hold on bent parts?

Linear tolerances: ±0.1 mm on laser-cut features, ±0.2 mm on press-brake bends up to 1000 mm, ±0.3 mm on welded assemblies. Angular tolerance: ±0.5° on single bends, ±1° on multi-bend boxes. Repeatability batch-to-batch better than ±0.05 mm on our Amada brakes.

Do you handle powder coating in-house?

Yes. We operate an in-house powder coating line with automatic pre-treatment (degrease, phosphate, chromate), electrostatic powder spray booth, and infrared-cure oven. RAL, Pantone and custom color matching available. Texture finishes: smooth, fine texture, sand texture, hammer tone. Also wet paint and liquid coatings through vetted partners.

Can you insert threaded hardware (PEM studs, standoffs)?

Yes — a critical step for sheet metal assemblies. We install PEM/Penn Engineering press-in hardware including threaded standoffs, studs, nuts, captive fasteners, and threaded inserts, using hydraulic press machines with proper anvil tooling to ensure consistent installation without sheet deformation.

What types of welding do you perform?

TIG (GTAW) for precision welds on stainless, aluminum, and thin steel — ideal for cosmetic assemblies. MIG (GMAW) for faster production welds on thicker steel. Spot welding for sheet joins. Robotic welding for large production runs. All welds performed to AWS D1.1 (steel), D1.2 (aluminum) or D1.6 (stainless) standards.

Can I get prototypes in sheet metal before committing to tooling?

Yes. Unlike injection molding, sheet metal has effectively no tooling cost — each part is laser-cut and brake-bent from flat stock. We regularly produce 1–5 prototype units in 3–5 days, then the same process scales up to production of 1,000–10,000 parts with no geometry change.

What CAD formats do you accept for sheet metal?

3D: STEP, IGES, SolidWorks (.sldprt), Inventor (.ipt), Pro/E/Creo. 2D flat patterns: DXF (preferred for laser cutting), DWG. If you provide 3D models, we unfold them to flat patterns using our CAM software. For welded assemblies, include an exploded assembly drawing showing weld symbols per AWS A2.4.

Keep reading

PifyC

Send a CAD file. Get an engineering-reviewed quote.

No minimum quantity, free DFM feedback from a senior manufacturing engineer, and an NDA signed before file review on request.

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