Precision Engineering for Global OEMs
Custom Metal electrical enclosure services
From rapid prototyping to high-volume production, Supro MFG delivers one-stop precision metal fabrication with ISO-certified quality. Reduce your lead times and production costs with our expert DFM support.
- 1-3 day Rapid Prototyping & Agile Supply Chain Delivery.
- On-time delivery of high quality product commitments.
- Extensive Material Selection & Industrial-Grade Finishing.
- Direct-from-Factory Pricing & Transparent Costing.
- ISO 9001-2015 / IATF 16949:2016 certified system.
Rapid Prototypes, DFM Optimization, On-Time Delivery, Real Manufacturer Quote.
Rapid prototype Turnaround
Committed to exceeding expectations for quality and rapid turnaround, and meeting high-quality sheet metal parts.
Consistency & high quality
Whether it is rapid prototyping & large-volume manufacturing, we will implement it according to customer needs and standards.
Low Cost Effective
Integrate product design, bending, stamping, cutting, surface treatment, etc. to provide a series of manufacturing solutions.
Complies with NEMA 4X, UL 508A, or IP66 protection standards
custom Electrical enclosure Manufacturer
Supro MFG specializes in custom-made, high-quality electrical enclosures (metal electrical enclosures), offering a wide range of types, models, and sizes.
Our products feature multiple protective functions, including dustproof, waterproof, and corrosion-resistant properties, ensuring the stable operation of electrical equipment in every aspect. With our expert metalworking techniques, we are able to precisely meet the customized needs of various industries and harsh environments, safeguarding the stable operation of electrical components in a wide range of demanding conditions and sectors.
These include telecommunications base station network equipment; control panels and sensors for industrial automation; and inverters, controllers, and energy storage systems in solar, wind, and hydroelectric power generation facilities.
Outdoor Electrical Enclosures
Modular Electrical Enclosures
Lockable Electrical Enclosures
NEMA Electrical Enclosures
IP-Rated Electrical Enclosures
Floor-Standing Electrical Enclosure
Weatherproof Electrical Enclosures
Electrical Switch Housing
Concealed-Hinge Electrical Enclosure
Securing Your Designs with Enterprise-Grade Confidentiality at Every Stage of Manufacturing
Your Innovation, Protected:
Uncompromising IP Security & NDA Compliance
At Supro MFG, we understand that your designs are your most valuable assets. As a strategic sheet metal stamping partner, our commitment to your intellectual property is absolute. We operate under a strict Zero-Leak Policy, ensuring that every blueprint, CAD file, and prototype remains strictly confidential within our secure engineering ecosystem.
We proactively offer comprehensive Non-Disclosure Agreements (NDAs) that align with international legal standards, providing you with a transparent and enforceable framework for cooperation. Beyond legal paperwork, our internal protocols include segmented data access, secure server encryption, and rigorous staff training on IP sensitivity. Whether you are a startup scaling a disruptive product or an OEM managing sensitive aerospace components, Supro MFG acts as a secure extension of your own facility. Partner with a metal stamping manufacturer that values your competitive advantage as much as you do.
Reliable Protection and Custom Solutions for Harsh Environments
High-Protection Industrial-Grade Electrical Enclosures
Supro MFG outdoor electrical enclosures are specifically designed to withstand harsh industrial environments and extreme weather conditions, ensuring the long-term, stable operation of critical internal electrical equipment through a multi-dimensional protective architecture.
Whether for outdoor base stations, renewable energy inverter systems, or industrial automation control, Supro MFG provides electrical enclosure solutions that combine high reliability with exceptional durability.
Advanced Protection and Premium Materials: Products meet IP65/IP66/IP68 protection ratings, providing comprehensive protection against dust and high-pressure water jets. The main materials are carefully selected industrial-grade stainless steel and high-strength aluminum alloy, offering excellent impact resistance and structural rigidity.
Weather Resistance, Corrosion Protection, and Sealing Technology: Surfaces are treated with highly weather-resistant, UV-resistant powder coating and galvanization, significantly enhancing resistance to salt spray and corrosion; combined with integrally molded, highly elastic foam sealing gaskets, this completely prevents the ingress of moisture and chemical contaminants.
Thermal Management and Comprehensive Safety: Integrated high-efficiency ventilation, fan, and heat exchange systems ensure constant temperature and humidity within the enclosed chamber, preventing overheating and condensation; equipped with high-strength mechanical locks, effectively enhancing protection against theft and vandalism.
Flexible Installation and Full Customization: Features a built-in, removable countersunk backplate that supports deployment in various scenarios, including wall-mounted, pole-mounted, and floor-standing configurations. Strictly compliant with international certification standards, the product offers in-depth structural customization and OEM/ODM services tailored to specific customer operating conditions.
One-Stop Solution for Custom Metal Electrical Enclosures
Common Material Options for Electrical Enclosures
stainless steel electrical Enclosure
Aluminum electrical Enclosure
carbon steel electrical Enclosure
Precision Metal Fabrication Services in China | Custom OEM Solutions & Rapid Prototyping
Your Strategic Partner for electrical enclosure Fabrication
At Supro MFG (Supro Manufacturing Co., Ltd.), we don’t just manufacture parts; we engineer reliability. As a leading China metal fabrication factory, we bridge the gap between complex design and cost-effective production. By leveraging our ISO 9001:2015 & IATF 16949 certified facilities and a seasoned engineering team, we provide 3,000+ global clients with unparalleled custom metal fabrication services—direct from the source with transparent, manufacturer-level pricing.
We specialize in the high-quality manufacturing and assembly of custom metal parts, with processing capabilities encompassing: sheet metal fabrication, metal stamping, CNC machining, laser cutting, metal welding, metal spinning, deep drawing, aluminum extrusion, die casting, as well as customized finished product assembly and surface treatment services.
From concept prototypes to mass production,
Supro MFG is your most reliable partner and you will benefit from our manufacturing services.
One-Stop Solution for Custom Metal Parts
Comprehensive Metal electrical enclosures Fabrication Services
Looking for reliable metal fabrication companies?
Supro MFG offers one-stop custom metal fabrication, laser cutting, and CNC machining. Expert DFM, high precision, and fast global shipping.
Sheet Metal Fabrication Services
Aluminum Extrusion Services
Precision Metal Stamping
Metal Welding Fabrication
CNC Machining Services
metal die casting Services
No design files? Let Supro MFG do it for you.
We often come across clients who have no professional design drawings and documentation, only a creative idea, which leads to the project being at a standstill.
If you are in this situation, then contact our team of experts.
Supro MFG, as an industry-leading custom metal fabricator, has an ever-experienced team of engineers who utilize their extensive fabrication experience and technical expertise to build your idea into a real product and create design files such as STEP/STP/SLDPRT/DXF/PDF/PRT/DWG/AI.
That’s what makes SUPRO MFG so great, and 2,000 corporate, entrepreneurial, artist, and other purchasers from around the world enjoy working with us and benefiting from our one-stop manufacturing services.
Common Challenges and Solutions for electrical Enclosure
Heat buildup, fastener corrosion, gasket failure, and other issues are common challenges in electrical enclosure applications. At Supro, we use ventilation openings equipped with IP55-rated filters, select zinc-nickel alloy fasteners that comply with ASTM B117 (and have passed salt spray testing for over 1,000 hours), and utilize silicone foam gaskets with a compression set of only 30%. The product has been validated through thermal cycling tests from -40°C to +85°C in accordance with IEC 60068-2-14.
Internal Heat Buildup Caused by High-Density Components
DIN-rail-mounted inverters and power supplies generate excessive heat, leading to component derating or premature failure. In such cases, side-mounted filtered fans (IP55) can be installed in the electrical enclosure in conjunction with top exhaust louvers. We calculate the airflow in cubic feet per minute (CFM) based on the NEMA 12 standard and verify it via thermal imaging under full-load conditions.
Corrosion at Conduit Inlets and Around Hardware
In humid or coastal environments, galvanized fittings can rust within six months, compromising the integrity of the NEMA 4X protection rating. In such cases, 316 stainless steel conduit fittings + nickel-plated brass compression fittings can be used in the electrical enclosure. All external fasteners pass the ASTM B117 salt spray test (over 1,000 hours).
Inadequate EMI/RFI shielding for sensitive control systems
Slotted openings and ungrounded panels allow interference to penetrate, causing signal noise in PLCs and radio systems. Conductive gaskets can be used on the electrical enclosure door, with 2.5 mm spacing between galvanized overlapping seams, and grounding studs installed in accordance with MIL-STD-285.
Compression and deformation of the sealing gasket after repeated opening
Foam gaskets lose their resilience after 50 door cycles, causing the IP rating in the washdown area to drop from 66 to 54. Use closed-cell silicone foam with a 30% compression ratio in the electrical enclosure; laboratory testing confirms 2,000 leak-free cycles at 0.5 bar pressure. Complies with ASTM D1056.
A part is only as good as its finish.
High-Performance Surface Finishing: Aesthetics Meets Durability
At Supro MFG, we understand that professional custom metal fabrication requires more than just structural integrity—it demands surface treatments that withstand harsh environments and strict aesthetic standards.
Our integrated finishing shop provides a seamless transition from the production line to the final coating, ensuring tight control over lead times and quality.
online custom metal fabrication parts
Only 4 steps
Contact our experts team and experience the efficiency and economic benefits of digital metal fabrication services.
Upload Design Files
STL , STEP (.stp), IGES (.igs), (.ZIP), or PDF.
Also be a sample or an idea
Quote & Design Analysis
Instant factory quotes and DfM reports, the most reasonable solution.
Manufacturing Begins
Digital processes can initiate order tasks within 24 hours.
On-Time Delivery
Keeping delivery promises, approved by 3000+ Global Company buyers.
Looking for a reliable custom metal outdoor enclosure Services?
Talk To Supro MFG Expert Team
Contact us for competitive ex-factory prices,
and a full range of technical support services.