The customized stainless steel casing was selected with the wrong material or process. Corrosion, deformation, and assembly failure would follow one after another – this is exactly the problem we are solving for our customers every day.

As a metal Fabrication expert founded in 1999, with a workshop of over 9,000 square meters and certified by ISO 9001:2015.We use advanced sheet metal Fabrication techniques to create durable stainless steel casings for you.

Common Grades of Stainless Steel

——Which one should you choose?

Not all stainless steels are the same. Choosing the appropriate shell grade depends on the usage environment, mechanical properties, and budget. Here are the three most commonly used grades:

304 stainless steel

The most widely used austenitic stainless steel has excellent corrosion resistance, formability, and strength.

It is the preferred choice for kitchen equipment, food processing, storage tanks, and general fabrication. It performs well in indoor environments and low-pollution conditions.

316 stainless steel

Referred to as “marine-grade” stainless steel, it contains 2-3% molybdenum. It has significantly stronger resistance to chloride and acidic environments.

It is the second most commonly used grade after 304. It is often used in food industry equipment, surgical instruments, marine engineering, and chemical processing fields.

430 stainless steel

Ferritic, with an alloy content lower than 304. It has good corrosion resistance in mild atmospheres and is often used for high-polished decorative items.

It is cheaper than 304 and 316, but is not suitable for corrosive environments. It is commonly found in household appliances, automotive decorations, and architectural finishes.

Each brand has its own advantages and limitations. The correct choice depends on your specific working conditions, performance requirements, and cost considerations.

👉If you are unsure, please click the button below to contact us. Our engineers will provide you with the most detailed advice.

📤 Contact Us

Three Real Project Cases

Case One: Outer shell of the testing instrument

The client is a manufacturer of food testing equipment and requires a corrosion-resistant, easy-to-clean casing that meets food-grade hygiene standards. The shape is a 60-120 mm cube with a wall thickness of 0.6-1.2 mm.

Previously, the supplier’s weld seams were rough, and the surface treatment did not meet the standards. The equipment frequently retained stains in the clean workshop, which affected the detection accuracy.

What did we do?

• 304 food-grade stainless steel with sandblasted & polished surface meets hygiene requirements.
• Lid is integrally stamped to ensure structural strength.
• Welds are finely polished; the top cover adopts a split design.
• Raised top section with positioning holes facilitates disassembly and lifting.
• Non-standard customization available per customer size requirements; free samples provided for pre-production verification.

Result

– The surface of the shell is smooth without any dead corners, resulting in a 30% increase in cleaning efficiency.
– It has passed the food contact material certification once.
– The customers have accepted it without any issues upon first inspection, and an additional 20,000 sets have been ordered for future orders.

Case 2: Protective shell for micro circuit boards

The client is an electronic component manufacturer. They need to customize ultra-small protective casings for microcircuit boards. The shape is a 10-25 mm square with rounded corners; the height is 8-20 mm, and the sheet thickness is 0.4-0.8 mm.

It must have complex features such as built-in installation hangers, positioning holes, and long slots for wiring. Previously, the scrap rate of the outsourcing factory was as high as 8%.

What did we do?

– Made of 304 stainless steel, with matte finish polishing treatment, enhancing corrosion resistance
– Integrated Deep Stamping molding, with precise round and square structures
– All installation hangers, positioning holes, and long slots for wiring are completed in one step in the stamping process
– The engineering team optimized the mold design, increasing material utilization by 15%

Result

The qualification rate is 99.5%, and the defect rate has decreased from 8% to less than 0.5%. The delivery cycle has been shortened by one week, meeting the customer’s expectations. It has been applied in batches to the customer’s new-generation portable detector.

Case 3: Electromagnetic shielding covers for industrial equipment

The customer needs to equip the sensitive control module with anti-damage and electromagnetic shielding covers. The material should be rust- and corrosion-resistant. It must have built-in installation fixing holes, semi-circular slots, and outwardly protruding installation ears.

Previously, using carbon steel covers resulted in a poor shielding effect and easy rusting.

What did we do?

– Made of 316 stainless steel, with sheet thickness ranging from 1.0 to 3.0 mm
– Utilizes a combination of multiple processes to ensure dimensional accuracy
– Surface is treated with sandblasting to enhance corrosion resistance
– Optimizes the slot position and installation ear structure to make the protective cover fit the equipment more closely

Result

– From the confirmation of the drawing to the delivery, it only takes 10 working days.
– The shielding efficiency has been enhanced by 40%, effectively resisting electromagnetic interference in the workshop.
– The equipment failure rate has decreased by 25%, and the maintenance cost has been significantly reduced.
– The customer has included this protective cover in the standard accessory list and has granted an annual framework order.

Why Choose Our Customized Stainless Steel Casing

We offer a complete range of services from design optimization and fabrication to surface treatment, ensuring that your project is hassle-free, efficient, and reliable.

✅ISO 9001:2015 certification
✅Monthly production capacity of over 500,000 pieces
✅Free design optimization, over 120 employees, 19 engineers with over 20 years of experience
✅Powerful equipment lineup [click to view complete equipment list]
✅Have customized over 70,000 different types of parts for 3,000+ enterprises in 100+ countries [click to view customized parts]
✅Free samples, verify before placing an order
✅Business team provides 1v1 service for you

Our core Fabrication capabilities include: sheet metal Fabrication (cutting, bending, welding, Stamping/Deep Stamping), metal casting, CNC machining, and surface treatment – all processes are carried out in the same factory area.