Precision Sheet Metal Enclosure Engineering Backed by ISO 9001 & IATF 16949 Standards
Custom Metal Enclosure Fabrication Services
As an ISO-certified manufacturer, we deliver custom metal enclosure fabrication with 20+ years of engineering expertise. From rapid prototyping to high-volume production, our certified sheet metal solutions ensure maximum durability and precision for global industrial, electronic, and automotive applications.
generator enclosure
Electronic Enclosure
outdoor enclosure
battery enclosure
IP-rated enclosure
NEMA Enclosure
weatherproof enclosure
din rail enclosure
Certified OEM/ODM Manufacturer
Precision metal enclosures manufacturer
Supro MFG is an industry-leading custom metal enclosure manufacturer in China, actively providing a full range of custom metal enclosures manufacturing solutions according to various industry applications, environments, industry standards and functional requirements.
Whether it’s small aluminum enclosures, extruded aluminum enclosures, stainless steel enclosures, carbon steel cabinets, die-cast junction boxes enclosures, or sheet metal enclosures, we have 28 years of experience ensuring the delivery of high-quality, close-tolerance metal enclosures.
From IP/NEMA-rated industrial junctions enclosure to precision electronic server racks. Get instant DFM feedback, certified manufacturing (ISO 9001 / IATF 16949), and global logistics support—all from a single-source partner.
Discover the specialized manufacturing technologies behind our high-performance custom metal enclosure solutions.
Advanced Metal Enclosure Fabrication Processes & Capabilities
Supro MFG provides a wide range of custom metal enclosure manufacturing solutions to help our customers save time, optimize product performance and enhance cost-effectiveness by improving product quality and efficiency, better catering to buyers from around the world and their project operations.
sheet metal enclosures
die casting enclosures
Extrusion enclosures
Deep Drawn enclosures
CNC Machining enclosures
Injection Molding enclosures
Engineering-Grade Stainless Steel, Aluminum, and Carbon Steel Tailored for Diverse Environments
Premium Material Selection for
Metal Enclosure Fabrication
Choosing the right alloy will directly determine how your project performs in real-world applications. We offer a comprehensive range of high-quality metal materials for the manufacture of metal enclosures, including aluminum, stainless steel, and galvanized steel. We ensure that our products meet strict international industrial standards for strength, corrosion resistance, and shielding performance.
Aluminum Alloy enclosure
stainless steel enclosure
Carbon Steel 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.
Why choose Supro MFG's Custom metal enclosure Services
Provide the most cost-effective cost solution for manufacturing and assembling products, expanding product competitiveness.
a technical team specializing in custom shell manufacturing for more than 30 years.
Advanced Manufacturing Equipment: Industry-leading custom metal enclosure manufacturer with in-house sheet metal, die casting, precision machining workshops, and surface coating workshops.
ISO 9001-2015, PPAP III level, RoHS, NEMA, CE and other certified production standards.
24H*7 online English technical support: The professional English team responds quickly to users’ technical questions online at any time.
help users from product design, prototype, batch manufacturing, surface treatment, assembly and packaging, transportation and a series of value-added services.
With in-house mechanics and chemistry laboratories, it can quickly monitor manufacturing process quality control to ensure the delivery of high-quality products.
Accept to sign NDA documents to ensure that customers‘ product information is protected.
Door-to-door delivery in customizable secure packaging after complying with the delivery details agreed with the customer.
why Choose
Custom metal enclosures process
Cutting :
According to different product requirements and materials, we use metal stamping, CNC punching, laser cutting, water jet cutting and other methods.
Bending:
We cold work and bend the metal plate through processes such as sheet metal bender, so that the metal plate can be quickly deformed into the shape we need. This is a very important process and it is necessary to understand sheet metal design guidelines.
stamping
Usually we rely on stamping to make some special designs such as: cooling vents, shutters, and other special designs, suitable for stamping and forming of large-scale products, with the advantages of high efficiency and low cost.
deep drawing:
The metal plate is deformed by external force. After forming, the thickness of the material will become thinner. Generally, the reinforcing ribs and ribs on the product are increased by stretching to enhance the structural rigidity and stress strength of the product. You can also add bumpy logo graphics.
welding
Supro MFG has a strong internal welding production line to provide welding support for sheet metal workshop products, including: arc welding, gas shielded welding, robotic welding, precision mold welding, etc. We have rich experience and professional expertise in sheet metal welding. The technical team can easily deal with the welding work of various structures and materials.
Assembly:
Riveting and welding are essential processes for customizing sheet metal cabinets. Most sheet metal cabinets need to be assembled with many accessories. We have a large reserve warehouse for fasteners and hinges, and can accept any special custom or imperial Fastener assembly to meet all the needs of users is our goal.
surface Treatment
According to the harsh application environment of different products, we can carry out surface treatment to enhance the characteristics of metal materials. For example, powder coating can be used for outdoor chassis to enhance corrosion resistance and increase aesthetics. The aluminum sheet metal chassis can be anodized to enhance surface hardness and customizable in beautiful colors. Kitchen cabinets can be brushed or painted to improve surface aesthetics and corrosion resistance. For more surface treatment options, please click here.
Testing :
In order to ensure that the product can meet the harsh application environment, we can conduct simulation tests on the product,
Includes:
- Salt Spray Test
- scratch test
- impact test
- drop test
- High temperature test
- low temperature test
- Wiring test
Accessories assembly & surface aesthetics
Custom Metal enclosures Fabrication
Flexible Accessories Assembly Services
In order to meet better functional custom metal enclosure projects, Supro MFG provides a full range of customized accessories and installation services. Whether your project is used in electronics, electrical appliances, industrial, medical and other industries, we can match your enclosure project with high Quality hardware, and installed correctly: hinges, rails, handles, shutters, casters, rain covers, standard/non-standard fasteners, locks, wall brackets, dividers, sponge seals, hydraulic springs, pneumatic struts, etc. .
We provide competitive value-added services, you can provide these accessories, we can also help to purchase at the factory price, provide after-sales warranty and replacement services.
Aesthetics Surface Finishing Services
Metal enclosures are usually used as outer protection and decoration. While protecting the internal precision instruments to the greatest extent, perfect visual aesthetics is an important role required by the project.
We provide a series of services such as aluminum alloy anodizing, stainless steel electropolishing, physical spraying, polishing, wire drawing, sandblasting, screen printing, laser engraving, UV spraying, etc.
Customizable color settings,
It can effectively enhance the anti-corrosion, anti-oxidation, and increase the strength of the material, and can also achieve the effect of improving the appearance.
for your industry
Metal enclosures Fabrication
indoor metal enclosures
outdoor metal enclosures
- Server and data center cabinets
- Computer and network cabinets and enclosures
- Electrical cabinets, control boxes and enclosures
- Equipment cabinets and enclosures
- Mild Steel Enclosure With Window And Handle
- Powder Coated Mild Steel Junction Box
- Mild Steel Wall Mount Electrical Enclosure
- Mild Steel Standing Enclosure
- Mild Steel NEMA 4X Electrical Enclosure
- Mild Steel Table Desk Electrical Enclosure
- Car Wash Vacuum Unit Enclosures
- Meter Control Panel Enclosures
- Vacuum Hose Hanger
- Programmable Token Vendor Enclosure
- Motor Control Center Enclosure
- Custom Signage and Architectural Elements
- Indoor Use Stainless Steel Wall Mount Electrical Enclosure
- Stainless Steel Wall Mount Enclosure
- 316 Stainless Steel Junction Box
- stainless steel electrical enclosures
- free-standing stainless steel electrical enclosures,
- floor mount stainless steel electrical enclosures,
- wall mount stainless steel electrical enclosures,
- stainless steel electrical enclosures
- stainless steel modular enclosures.
Strict quality control Process, you don't have to take any risk.
ISO 9001:2015 Certified – Quality You Can Verify
At Supro MFG, we understand that dimensional accuracy is non-negotiable for precision metal fabrication. Our quality management system utilizes a full suite of metrology tools, including CMM (Coordinate Measuring Machines), optical comparators, and ultrasonic thickness gauges, ensuring every feature meets your GD&T specifications.
including: raw material inspection, mold inspection, equipment inspection, process sampling, packaging inspection and final inspection, we can undertake QA (Quality Assurance) of products to ensure that they meet the necessary tolerances and quality standards.
Quality Control Objectives
- Raw Material Validation
- First Article Inspection (FAI)
- In-Process Monitoring (IPQC)
- Precision Metrology
- Surface Finish Verification
- Final Pre-Shipment Audit
Quality Control Documents
First article inspection report
First article inspection verification
Receiving inspection
Calibration database
Corrective actions
Over 200 active projects delivered to 15+ countries. 98% on-time delivery rate. Our customers include engineering firms, industrial OEMs, and distributors who demand consistent quality and supply chain transparency. We reduce your sourcing risk with full material traceability (EN 10204 3.1/3.2) and third-party inspection readiness.
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.
F.A.Q
Supro MFG is a professional Chinese sheet metal manufacturer, we specialize in the design and manufacture of custom sheet metal parts fabrication and Sheet metal Prototype, ISO 9001-2015 certified, providing a full range of sheet metal parts fabrication solutions and technical support .
We are not a trader, all products are done in our in-house factory, we have a reliable supplier of surface treatment, heat treatment, and standard parts to support us, and we can provide you with economical sheet metal manufacturers ex-works prices.
We have our own sheet metal fabrication factory, welding workshop, laser cutting workshop, and precision CNC Machining workshop, with a total area of more than 3000 square meters, with 12 technical engineers, 36 skilled workers, 6 quality engineers, and a professional English sales team.
Of course, we keep all the customer's information confidential, sign a non-disclosure agreement, our factory will not allow unrelated personnel to enter without authorization, your product design and patented technology will be protected by us.
Yes, we have rich manufacturing experience and technical knowledge, can draw professional design files (including: STL/STEP/IGES/PDF/CAD, etc.) according to your ideas, and provide you with free manufacturability solutions. Actively help you optimize product design, reduce costs, and make your product design more dynamic in the sales market.
From raw materials to finished packaging, we will provide you with reliable quality inspection reports and photos at any time. If you need an authoritative third-party inspection report, we can also actively cooperate to ensure that you will receive high-quality products.
T/T, Paypal western union, L/C, and other channels you suggest (contact us for negotiation).
Yes, we can provide system documentation for PPAP level3.
Our quotations are all factory quotations from manufacturers, and all manufacturing costs and labor costs are traceable. We all use the raw materials of authoritative manufacturer brands, refuse to cut corners, and all products are subject to our quality control.
While there are plenty of small businesses that offer you a very low price, the quality can be at risk.
What your project needs more is the guarantee of high-quality products and on-time delivery, not high-risk.
We do not set a minimum order quantity. Whether you need a small amount of prototypes or large quantities, we will treat you equally and provide you with a full range of manufacturing services and technical support.
We will develop a detailed production plan, every point in time will be practically verified, and all processes are under our monitoring to ensure on-time delivery of high-quality products. (Except for the influence of force majeure factors)
Once there is a signal of delay, we will organize more production capacity to ensure on-time delivery.
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.
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Get instant ex-factory price
metal enclosure quotation.
If you only have an idea or an old sample,Let us know.
with photo or video and get our quotation and manufacturing solutions.
- Product design drawings or 3D model files.
- Material standards and appearance requirements.
- Product quantity demand.
- Industry standards in the application field.
- Functional requirements