Precision Engineering for Global OEMs
Custom IP Enclosure Services
Supro MFG specialises in the custom manufacture of enclosures with various IP protection ratings, offering bespoke dimensions and functional designs. From mould development to precision sheet metal fabrication, we provide high-quality, one-stop solutions. From rapid prototyping to large-scale production, we offer one-stop precision IP-rated machining services that comply with ISO certification standards. With our expert DFM support, we help you shorten lead times and reduce production costs.
- 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.
- Delivering finished, ready-to-use products.
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.
A custom NEMA enclosure manufacturer with extensive manufacturing experience
Custom IP Enclosures for a Variety of Applications
Supro MFG offers professional custom IP rated enclosure services, including wall-mounted, floor-standing, freestanding, and pole-mounted enclosures. Whether in complex industrial settings or harsh outdoor environments, we use our expert sheet metal fabrication skills to create safe and reliable electrical protection solutions for you.
Wall-mounted IP enclosure
Floor-Standing IP enclosure
Post-Mounted IP Enclosure
Freestanding IP Enclosure
Rack-Mounted IP Enclosure
Embedded IP Enclosure
Highly reliable electrical protection solutions
A Guide to the Various Applications of IP Enclosures
IP rating
Application type
Protective Features
Application Environment
IP54
Standard Industrial and Basic Outdoor Models
Protects against water splashes or low-pressure water spray from all directions.
Indoor wall-mounted control panels, freestanding cabinets, and factory workshop control consoles.
IP55
Standard Industrial and Basic Outdoor Models
Protects against water splashes or low-pressure water spray from all directions.
Outdoor heavy-duty equipment cabinets, communication base stations, and liquid-cooled/air-cooled commercial and industrial energy storage systems.
IP65
Standard Outdoor and Harsh Industrial Environment Models
Completely dustproof and resistant to low-pressure water jets
Outdoor electrical distribution boxes, solar combiner boxes, and commercial and industrial energy storage (BESS) battery cabinet enclosures.
IP66
Heavy-Duty Washdown and Corrosion-Resistant Environmental Type
Heavy-Duty Washdown and Corrosion-Resistant Environmental Type
Control panels for food processing plants, power distribution cabinets for offshore platforms, and electrical enclosures for heavy chemical processing environments.
IP67
Extreme Environments and Submersion-Type
Completely dustproof and can be submerged in water for short periods of time
Underground junction boxes, sensor housings, and specialized outdoor communication base stations.
IP68
Extreme Environments and Submersion-Type
Completely dustproof; withstands prolonged immersion in deep water
Submersible Junction enclosure, Submersible Pump enclosures, Sensor Enclosures, Solar Microinverter Enclosures, Portable Power Stations
High-quality IP enclosures:
up to 5 years’ after-sales warranty
Whether your IP enclosure is designed to withstand salt fog corrosion in coastal environments or to ensure the outdoor operation of new energy equipment under various weather conditions, we offer a full range of customized IP enclosure services—from design and engineering to precision sheet metal fabrication and rigorous quality inspection—to build a robust safety barrier for your electrical systems..
As a specialized manufacturer of custom IP-rated enclosures, Supro Mfg is committed to designing highly reliable electrical protection solutions to meet our customers’ needs in harsh industrial and outdoor environments. With our high-precision sheet metal fabrication and CNC machining technologies, we are able to customize a wide range of metal IP enclosures.
We use high-quality 304/316 stainless steel and aluminum alloy materials. Through precision laser cutting, CNC bending, and continuous corrosion-resistant welding processes, we ensure our products offer exceptional dustproof, waterproof, corrosion-resistant, and impact-resistant performance, enabling their safe use in demanding environments such as chemical plants, offshore projects, and outdoor settings prone to frequent seismic activity.
Supro Mfg strictly adheres to a professional quality control system and is committed to delivering highly reliable custom IP-rated enclosures, backed by a 5-year warranty.
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 product design is your most valuable asset. As your strategic partner, we sign a rigorous NDA confidentiality agreement before launching any custom ip enclosure project, ensuring absolute protection for your intellectual property.
We strictly enforce a zero-leakage policy, ensuring that every blueprint, CAD file, and prototype remains strictly confidential within our secure engineering ecosystem. With no third parties involved in the process, we eliminate the risk of technical leaks and provide comprehensive protection for your startup’s designs and core patents.
What is an IP enclosure?
custom IP enclosures are precision-engineered enclosures designed to comply with IEC 60529 and NEMA standards, providing reliable protection for critical electrical components against dust, moisture, and harsh environmental conditions.
With over 20 years of experience in metal enclosure fabrication, Supro understands that achieving verifiable IP66 or IP67 protection ratings requires strict process execution on the production line. That is why we utilize high-precision CNC laser cutting, capillary-free continuous TIG welding, and automated field-in-place foam gaskets (FIPG) to ensure absolute seal integrity under pressure. Whether utilizing corrosion-resistant 316L stainless steel cold forming or reinforced aluminum alloy, we guarantee structural rigidity to effectively prevent door deformation and thermal distortion.
Supro MFG offers end-to-end custom sheet metal fabrication services, crafting custom IP enclosures tailored to your specific dimensional and environmental requirements.
One-Stop Solution for Custom Metal ip enclosure Parts
Comprehensive Metal ip enclosure Fabrication Services
Looking for reliable metal ip rated enclosure fabrication companies?
Supro MFG offers one-stop custom metal ip enclosure fabrication, laser cutting, and CNC machining. Expert DFM, high precision, and fast global shipping.
Sheet Metal Fabrication Services
Aluminum Extrusion Services
CNC Machining Services
Metal Spinning Services
Deep Drawing Stamping Services
metal die casting Services
Not only are they guardians of the equipment, but they are also eye-catching works of industrial art.
Add an artistic aesthetic to the IP enclosure.
At Supro MFG, we are dedicated to transforming industrial equipment into visual art. Our custom IP electrical enclosures break away from the monotony of traditional industrial design, seamlessly blending pleasing aesthetic appeal with impeccable durability.
Our products are not only visually striking but also feature industry-leading surface treatment technologies that provide highly effective corrosion protection and exceptional wear resistance, allowing them to effortlessly withstand a wide range of harsh industrial environments.
To perfectly align with your brand image and project requirements, Supro MFG offers highly flexible customization services—including a wide range of personalized color options, diverse surface textures, and various corrosion-resistant surface treatments.
Meticulous craftsmanship from the inside out ensures that every enclosure delivers robust safety protection while showcasing the highest-quality surface finish. Let your IP enclosures be not only durable guardians of your equipment but also visually striking works of industrial art.
From DFM assessments to rigorous protection testing
Reasonable surface treatment of metal parts can improve the durability, corrosion resistance, heat resistance, electrical conductivity and appearance decoration of the material.
As a professional B2B custom sheet metal manufacturer, we are committed to eliminating all potential risks in engineering procurement and project management. Upon receiving a customer’s 3D CAD model (e.g., STEP, IGES), our experienced sheet metal engineering team will provide a detailed DFM (Design for Manufacturability) report within 24 hours.
- Assessment of sheet metal bending radius feasibility;
- Early warning of crack risks at cut edges and hole margins;
- Simulation of welding heat distortion and inspection of weld accessibility;
- Cost optimization recommendations based on our standard die library.
We specialize in pushing the boundaries of standard dimensions and interface limitations for electrical enclosures. After analyzing the application environment and functional requirements, we conduct professional DFM analysis to proactively provide one-stop custom IP enclosure manufacturing services and technical support.
Custom metal IP enclosure fabrication Material Solutions
At Supro MFG, we offer a full range of metal materials to meet the demanding requirements of any industry or environment, and we can proactively advise our customers on metal fabrication techniques that utilize the properties of the materials to maximize the life and functionality of their products.
Aluminum Alloy IP enclosure
It is more than 50% lighter than steel, features a naturally formed aluminum oxide protective layer, and offers extremely high thermal conductivity, making it the ideal material for high-power outdoor heating equipment (such as 5G base stations and energy storage systems).
Common Surface Treatment Solutions:
Aluminum Alloy IP Enclosures + Sandblasting + Anodizing: Anodizing can alter the surface texture and color, enhance the product’s wear resistance and impact resistance, and improve the aluminum alloy’s impact resistance.
stainless steel IP enclosure
Gold-grade material meeting the NEMA 4X standard. 316L stainless steel, with added molybdenum, resists corrosion from strong acids and alkalis as well as high-salinity marine salt fog; its mirror-polished or brushed finish prevents dirt buildup and is extremely easy to clean.
Common Surface Treatment Solutions:
Stainless Steel IP Enclosures + Brushed and Polished Finish: Stainless steel contains elements such as chromium and molybdenum. After undergoing a brushed and polished finish, it provides effective corrosion resistance, is easy to clean, and always maintains a shiny, like-new appearance.
Carbon steel IP enclosure
The best value NEMA 3R/4/12 option. Thanks to rigorous acid washing and phosphating pretreatment and a thick polyester coating, it can withstand years of exposure to UV rays, wind, and rain outdoors.
Common Surface Treatment Solutions:
Carbon steel IP enclosures + powder coating/anodizing/electroplating: After undergoing high-quality chemical surface treatment, these enclosures effectively resist damage from outdoor UV radiation and can withstand outdoor environments exposed to wind and sun.
galvanized steel IP enclosure
NEMA enclosures made of galvanized steel offer both high mechanical strength and excellent value for money. Their built-in zinc coating provides reliable basic corrosion protection, enabling stable operation in coastal or acidic/alkaline corrosive environments.
Common Surface Treatment Solutions:
Galvanized steel IP enclosures + powder coating: This dual-protection solution involves applying a polyester coating to the surface of the metal substrate, effectively shielding it from corrosive air and liquids while providing high corrosion resistance.
Precision Metal Fabrication Services in China | Custom OEM Solutions & Rapid Prototyping
Your Strategic Partner for Custom IP 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 enclosure fabrication services—direct from the source with transparent, manufacturer-level pricing.
We specialize in the high-quality manufacturing and assembly of custom metal nema enclosure 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.
Common Manufacturing Defects in IP Enclosures: Analysis and Solutions
In the manufacturing of custom IP enclosures, on-site equipment failures are rarely caused by a single major defect; rather, they are mostly the result of the cumulative effect of minor flaws in sheet metal fabrication, material handling, and surface coating processes. By combining on-site failure statistics with industry inspection data, Supro has analyzed the most common types of defects found in IP enclosures.
Permanent Compression Set and Aging of Sealing Gaskets
After prolonged exposure to thermal cycling, UV radiation, and corrosion from industrial chemicals, sealing gaskets can harden, crack, or become permanently flattened. Once a gasket loses its elasticity (developing permanent compression set), it can no longer compensate for minute deformations and displacements in the enclosure, inevitably leading to water ingress.How to Solve This?
Supro’s IP enclosures prioritize silicone rubber or EPDM (ethylene propylene diene monomer) gaskets, eliminating standard neoprene and low-cost rubber gaskets. In outdoor environments with direct UV exposure, our IP enclosures withstand extreme temperatures and resist UV-induced aging.
In addition, Supro utilizes field-in-place-formed (FIPG) foam gaskets in its IP enclosures. These continuous polyurethane (PUR) foam seals are formed through integrated spray molding, resulting in a seamless design. Unlike cut-and-glued strip gaskets, this eliminates weak sealing joints and offers superior compression recovery and resilience.
Pores and Pinholes in Continuous Welds
Corner welds on IP enclosures exhibit micro-pores and insufficient penetration, resulting in immediate failure of IP66/IP67 waterproof and airtightness testing. The root cause of these issues (welding process control) is contamination of the welds by oil residue from laser cutting; insufficient shielding gas supply and incomplete coverage of the welding hood during manual TIG/MIG welding.
Supro has implemented a comprehensive solvent-wiping degreasing process prior to welding; upgraded robotic laser welding and pulsed TIG welding equipment to ensure precise temperature control and stable argon shielding; and eliminated capillary micro-pores in IP enclosure welds, achieving fully airtight continuous welds.
Peeling and Blistering of Powder Coatings on IP Enclosures
Even minor impacts on IP enclosures can cause extensive coating peeling or internal blistering, exposing the bare metal substrate to direct contact with external moisture and dust.
The root cause (lack of surface pretreatment) is inadequate substrate preparation; rolling scale, cutting fluid, and welding fumes were not thoroughly removed, preventing the electrostatic powder coating from forming a chemical bond with the metal substrate.
Supro implements a multi-step, rigorous pretreatment process: alkaline cleaning and degreasing → multi-stage pure water rinsing → phosphating/zirconium-based conversion coating treatment. This process etches and roughens the metal surface, providing a solid adhesion base for powder coating and curing.
Transportation-related bumps, scratches, and surface wear
High-quality powder-coated and brushed IP enclosures arrived covered in scratches. The root cause (insufficient packaging protection) was vibration of the boxes during transport, resulting in metal-to-metal friction or contact with rough cardboard.
At Supro, after the powder coating oven has cooled and final product inspection is complete, low-tack PE polyethylene protective film is immediately applied to all external surfaces of the IP enclosures; non-abrasive EPE foam dividers are placed between stacked enclosures on the same pallet to provide separation.
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.
Professional manufacturing processes and hardware components work together to create a robust protective system
High-Quality IP Enclosure Hardware Options
The exceptional protective performance of IP enclosures is made possible by high-quality hardware components. In our sheet metal manufacturing, we extensively use standard PEM® self-clinching rivet nuts and studs; these fasteners provide high-strength load-bearing threads in thin sheets without the need for welding. This not only maintains the smooth and aesthetic surface of the enclosure and prevents thermal deformation caused by welding, but also significantly enhances overall sealing and corrosion resistance.
- Self-clinching nuts (S/CLS)
- Self-clinching standoffs (SO/BSO)
- Self-clinching studs (FH/FHS)
- Flush nuts (F)
- Floating nuts (AS/AC)
- Blind standoffs (BSO)
- Spring-loaded plungers (PTC)
- Panel fastener assemblies (PF11)
- Pilot pins (TPS)
- Concealed-head standoffs (CSS)
- Continuous / Piano hinges
- Concealed hinges
- Quarter-turn locks
- T-handle locks
- Quick-release latches
- PU foam gaskets (Pour-in-place)
- EPDM rubber weatherstripping
- Padlock hasps
- Stainless steel grounding studs
- Waterproof vent plugs / Breathers
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.
Engineering Versatility: Precision Components for Demanding Industries
Thanks to their exceptional dustproof, waterproof, and corrosion-resistant properties, IP enclosures are widely used in major core industrial sectors. From industrial automation control cabinets and outdoor communication base stations to new energy battery energy storage systems (BESS) and transportation security, customized IP enclosures effectively withstand extreme weather conditions and industrial pollution, providing robust protection for precision electrical equipment and ensuring the long-term, safe, and stable operation of systems.
Industrial IP Enclosure
New Energy IP Enclosure
Communications IP Enclosure
Medical IP Enclosure
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Upload Design Files
STL , STEP (.stp), IGES (.igs), (.ZIP), or PDF.
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Quote & Design Analysis
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