China Supro MFG

metal cover

A full range of custom metal cover solutions

Meet all functional requirements, standards and aesthetics.

Industry Enclosure

Electronic Enclosure

PCB Enclosures

Junction Box Enclosures

custom metal covers manufacturing

Sheet metal cover is one of the most common products in precision sheet metal parts, such as: cable control box cover, industrial electrical box cover, high quality telecommunication cabinet cover, outdoor equipment box cover, and household metal junction box cover, etc. All of them need high quality sheet metal cover to protect the internal circuits and equipments. And, in many outdoor projects, sheet metal cabinets are required to be waterproof, dustproof, shockproof, and other special features, including: NEMA metal cabinets, IP-rated junction boxes, and other high-end products, to protect parts and equipment from being exposed to harsh environments, and thus to have special corrosion-resistant capabilities to prolong the continuous and long-lasting working cycles of electronic equipment, circuits, and other system components.

As a leading manufacturer of customized sheet metal covers, Supro-MFG has been involved in many customized metal cover projects, and has extensive design and manufacturing experience as well as a professional sheet metal engineering team to provide full technical support and turnkey manufacturing services for customized metal cover projects.

Our manufacturing capabilities range from general manufacturing to specialized industries such as medical, telecommunications, military, new energy, oil and gas, and are applicable to any metal material and complex geometric requirements.

customized aluminum alloy stamping parts

Rapid Prototype Turnaround

Committed to exceeding expectations for quality and rapid turnaround, and meeting high-quality sheet metal parts.

On-Demand Sheet Metal

Whether it is rapid prototyping & large-volume manufacturing, we will implement it according to customer needs and standards.

Real Fabricators Price

Integrate product design, bending, stamping, cutting, surface treatment, etc. to provide a series of manufacturing solutions.

Optional metal cover material

Depending on the size constraints you require, and any type of metal material, utilizing high-precision CNC bending equipment, as well as CNC laser machines, we can realize custom metal covers for any application with complex geometries, and your needs will be met to the greatest extent possible, and we will offer the most cost-effective ex-factory prices.

China Precision aluminum alloy extrusion parts manufacturing

Aluminum Alloy covers

stainless steel covers

carbon steel stamping parts

galvanized steel covers

Custom carbon steel bracket

carbon steel covers

precision copper connector

Copper Alloy covers

steel stamping bracket

Titanium Alloy covers

Aluminum Alloy

stainless steel





6061-T6 / T5























Q235 - F




# 45

20 G

10 GA

0.6mm - 200mm

1220mm * 2440mm

Custom roll & Strips

0.05mm - 300mm

1220mm * 2440mm

Custom roll & Strips

0.5mm - 6mm

1200mm * 4000mm

Custom roll & Strips

0.5mm - 500mm

1500mm * 6000mm

Custom roll & Strips

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.

Precision aluminum extrusion parts manufacturer in China

Custom metal cover manufacturing solution

Supro mfg will custom-machine metal covers to meet your application needs, using a range of metal fabrication techniques to create rugged, structurally complex, customized metal covers that turn your elaborate designs into real products.

Why choose Supro MFG's Custom metal covers Services

SUPRO MFG is a trusted manufacturer of custom metal parts, benefiting more than 2,000 companies and designers from all over the world, and maintaining stable, long-term supply relationships. You don’t need to worry about our credibility.

We specialize in customizing complex metal housings for a variety of industry applications and offer turnkey custom metal fabrication services with efficient turnaround times.

We have extensive manufacturing experience and a dedicated team of technical professionals in the field of custom metal covers, providing one-on-one complete customized solutions to our customers. Regardless of the stringent quality requirements and complex product design models, at Supro mfg, you will receive the most satisfactory and cost-effective supply services.

For custom metal covers, we offer a range of manufacturing techniques: sheet metal bending, sheet metal stamping, aluminum extrusion, aluminum die casting, precision CNC machining, and more to achieve more complex geometries for a wide variety of applications. These include: corrosive chemicals, extreme temperature and humidity environments, corrosive sea surfaces, friction impacts, etc.

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.

custom copper table bracket

Surface treatment of metal covers

After high quality surface treatment, the corrosion resistance, impact resistance and UV resistance of metal covers will be greatly increased, and they will show good performance even in harsh environments. The result is a strikingly artistic metallic aesthetic.

Powder Coating

Effectively wraps metal surfaces and resists rust with aesthetically pleasing custom colors.

Precision aluminum alloy extrusion parts manufacturing in China

anodic oxidation

Forms an oxide film on the surface of aluminum alloy to improve hardness, aesthetics, and corrosion resistance.

Brushed polished

It presents a glossy metallic texture with an even grain that enhances the aesthetics of the product.

carbon steel stamping parts


Cleaning the metal surface, presenting a uniform roughness and improving the adhesion of the paint.

mirror polishing

The metal surface is polished and honed to give a mirror-like finish, increasing the aesthetic effect of the part.


A metal protective film, improve wear resistance, conductivity, reflectivity, corrosion resistance and enhance the role of aesthetic.

custom stamping parts

laser engraving

Commonly used for engraving on the surface of parts, logos, product descriptions, or complex patterns.

screen printing

Printing paint onto the surface of a product creates content of any shape and color that is hard-wearing and beautiful.

why Choose

Quality assurance

Our priority at Supro MFG is to ensure the on-time delivery of high-quality products. By setting up an assembled quality technology and control team, we conduct feasibility reviews of all manufacturing processes of parts, and troubleshoot human, equipment, and tooling hazards. The orderly production of products in the production line is closely monitored, which is unique in our manufacturing process.

Through the continuous improvement plan and the hard work of the quality control team, we can eliminate the cost waste and delay of defective products, ensure that all manufacturing processes are carried out at low cost, and the reliable products that users need are delivered on time.

Material Report Review

Dimensional Inspection

Coating Inspection

performance testing


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.

Get instant ex-factory price 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