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Custom Sheet Metal Enclosures

Custom Sheet Metal Enclosures

Precision custom sheet metal enclosures, electronic chassis, 19-inch rackmount boxes, and NEMA/IP-rated electrical cabinets. Built to your exact CAD specs with installed PEM hardware, welded seams, EMI shielding, and durable powder coating.

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100,000+ Parts Made
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ISO 9001:2015 Certified
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NEMA & IP Rated
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Huawei Technologies
Samsung Electronics
Tata Motors
Delta Electronics
Lens Technology
Eveready Industries
Beijing Institute of Technology
Ansell LTD
NRTC
Chantelle
PT Wings Surya
PT Sun Paper Source
PT Supreme Paper Solution
Huawei Technologies
Samsung Electronics
Tata Motors
Delta Electronics
Lens Technology
Eveready Industries
Beijing Institute of Technology
Ansell LTD
NRTC
Chantelle
PT Wings Surya
PT Sun Paper Source
PT Supreme Paper Solution
Design Guide
Max work size2000 × 1200 × 800 mm
Material Thickness0.8–4 mm
Tolerances±0.5 mm overall assembly, ±0.2 mm hole centers
Rule of Thumb
1.0–2.5 mm typical wall gauge
Feature Spacing
PEM nuts, studs, standoffs, blind rivets, captive screws
Finish Options
Powder coating (RAL/Pantone), anodizing, chem-film (Alodine), silk-screening
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DFM Design Advice
1/ Specify standard PEM hardware codesInclude industry-standard PEM fastener part numbers in CAD models to ensure exact thread sizes and standoff heights.
2/ Account for powder coat thickness on mating fitsAllow 0.3–0.5 mm clearance between slide-in covers, doors, and hinges to accommodate 80 µm powder coating thickness.
3/ Add stiffening ribs to large flat spansIncorporate formed stiffener ribs or hat-channels on large sheet panels to eliminate oil-canning without increasing sheet weight.
Enclosure MaterialsSelect from aluminum, cold-rolled steel, galvanized steel, or stainless steel depending on weight, shielding, and environmental exposure.
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Aluminum 5052-H32

Lightweight, naturally corrosion-resistant, and thermally conductive. The preferred choice for desktop electronics, aerospace chassis, and portable instrument boxes.

Natural Appearance
Silver
Price Rating
$$
Standard Lead Time
From 5 business days

Why Sango for Custom Enclosures

Sango manufactures turnkey sheet metal enclosures ready for immediate PCB, power supply, and wiring integration. We integrate fiber laser cutting, CNC bending, automated hardware press-in, corner welding, and in-house powder coating under one quality system.

Our engineering team reviews airflow louvers, grounding stud positions, hinge clearances, and EMI gasket channels before production, delivering enclosure prototypes that assemble seamlessly.

300+
Sets of Machine
120+
Countries Shipped
20k+
Customers Served

Sango Online Custom Sheet Metal Solutions

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Laser Cutting

High-speed fiber lasers cut complex I/O port openings, connector cutouts, and ventilation patterns with ±0.1 mm precision.

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CNC Bending

Multi-axis CNC press brakes form precise 90° flanges, U-channels, and wrap-around covers with tight ±1° angle control.

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Welding

TIG, spot, and laser welding seal enclosure corners, attach stiffening brackets, and mount heavy grounding lugs securely.

Enclosure Post-Processing Capabilities

Turnkey cosmetic finishing, environmental protection, and graphics printing for custom enclosures.

Finishing ProcessSurface RoughnessDimensional ChangePrimary Application / Benefit
Powder Coating (Smooth / Texture)Custom texture+60 to +120 µmExtremely durable, chip-resistant finish in any RAL or Pantone color code
Chem-Film (Alodine 1200S)Gold or clear iridescent< 1 µmElectrically conductive corrosion barrier for aluminum aerospace enclosures
Type II & III AnodizingRa 0.8–1.6 µm+10 to +25 µmDecorative matte black or colored wear layer with 50+ V electrical insulation
Silk Screening & Pad PrintingHigh-contrast ink< 10 µmDurable silkscreened port labels, regulatory logos, and branding graphics
Laser Marking / EngravingPermanent etched contrastZeroHigh-durability serial numbers, QR codes, and regulatory certifications
EMI / Ingress Gasket DispensingForm-in-place elastomerCustom profileContinuous silicone/conductive foam gaskets for IP65 and EMI shielding

Why Choose Us

Engineers choose Sango for turnkey custom enclosures delivered ready for immediate final assembly.

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Turnkey Integration

We handle laser cutting, forming, welding, PEM hardware insertion, powder coating, and silk-screening under one accountable roof.

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Tight Tolerances

Enclosure covers slide on effortlessly with accurate ±0.2 mm mounting hole patterns and repeatable CNC formed flanges.

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Fast Prototype to Production

Receive fully finished, powder-coated prototype enclosures in as little as 5–7 business days, scaling seamlessly to production runs.

What are Custom Sheet Metal Enclosures?

Custom sheet metal enclosures are fabricated protective housings built from cut and bent metal panels, engineered to house and shield electronics, power systems, and industrial machinery. They provide superior durability, thermal dissipation, and EMI protection compared to plastic housings.

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ISO 9001:2015 certified enclosure manufacturing
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NEMA 1, 4, 4X, 12 and IP54–IP66 rating compliance
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Automated PEM fastener hardware insertion presses
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Integrated EMI/RFI shielding design and gasket channels
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In-house electrostatic powder coating line with RAL matching
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100% mechanical fit-check and continuity grounding inspection

Pros and Cons of Sheet Metal Enclosures

✓ Advantages of Sheet Metal Enclosures

Zero Expensive Tooling

Fabricated via laser cutting and CNC press brakes without costly injection molding or die casting tooling, saving thousands of dollars upfront.

Superior EMI/RFI Shielding

All-metal construction provides natural electromagnetic interference shielding and chassis electrical grounding for sensitive circuits.

Infinite Customization & Rapid Iteration

Design revisions, cutout alterations, and dimension adjustments are implemented in software instantly without retooling delays.

⚠ Considerations & Limitations

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Higher Unit Cost at High Volumes

For quantities exceeding 50,000 units, die casting or plastic injection molding achieves lower piece-part costs.

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Minimum Flange & Clearance Rules

Sheet metal requires press brake clearances and bend reliefs, limiting complex compound curves.

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Assembly Labor

Multi-part enclosures require welding, fastener insertion, and gasket application compared to single-shot molded shells.

What types of custom enclosures do you manufacture?

We build 19-inch rackmount chassis, desktop instrument enclosures, wall-mount electrical cabinets, NEMA/IP junction boxes, handheld consoles, and custom machinery housings.

What IP or NEMA ratings can your enclosures achieve?
Can you install PEM hardware and threaded standoffs?
What finishes are best for electronics enclosures?
Can you print logos and port labels on enclosures?
What is the standard lead time for prototype enclosures?
How do you ensure proper cover fit and alignment?
What CAD file formats are preferred for quoting enclosures?