SanJun Hardware – Custom Sheet Metal Enclosure Manufacturer
Established in 2010, SanJun Hardware is a professional Chinese manufacturer specializing in OEM and ODM sheet metal fabrication and custom enclosure production. With a 5,000-square-meter factory, we deliver high-precision custom sheet metal solutions to clients worldwide.
1. Core Expertise
We customize sheet metal enclosures for the following equipment:
Display devices and self-service terminals
Educational and medical equipment
Power distribution and charging cabinets
Automation equipment housings and energy storage systems
We convert your CAD drawings into finished sheet metal products and cabinets ready for mass production.
2. One-stop Sheet Metal Service
Full in-house processing capabilities:
Free Drawing Design and DFM technical support
CNC punching, laser cutting and CNC bending
TIG/MIG welding and automatic riveting
Surface treatment and complete assembly
Fully assembled enclosures and sheet metal parts are available for direct installation.
3. Production Scale & Capacity
50 skilled workers and professional engineering team
Flexible production for prototype orders and mass batches
Strict quality inspection and on-time delivery management
4. Quality & Competitive Strength
Certified with ISO 9001:2008 (GB/T19001-2008)
10% of annual profits reinvested in R&D and technological improvement
Our strengths cover stable quality, cost-effective pricing and short lead time. We serve as a reliable long-term supplier for display, self-service terminal, power and new energy industries.
25+
Years Experience
5000+
Square Meter Factory
50+
Cooperative brands
2000+
Types of accessories
Meet Our Team
Expert in Precision Sheet Metal Fabrication
Welding Department
The Sheet Metal Welding department specializes in the forming and processing of metal sheets (cutting, bending, stamping, etc.) and connects these sheet metal components into sturdy, precision parts or structural components through welding processes.
Spraying Department
The Coating Department of the Sheet Metal Industry is responsible for applying surface coatings to formed sheet metal components, providing them with protective and decorative coatings. This is the final step in ensuring the appearance, weather resistance, and service life of the product.
Fitter Department
The Sheet Metal Working Department is responsible for the fine adjustment, assembly, connection (riveting/screwing/gluing), and debugging of sheet metal parts, which is a key link in achieving the precise fit and functional integrity of parts.
Cutting Department
The Sheet Metal Laser/Numerical Control Punching and Blanking Department uses laser cutting machines and numerical control punching machines to precisely cut and punch metal coils or plates into blank parts with the required contours and hole positions.
Business Department
The Sheet Metal Business Department serves as the company's external window for sheet metal processing services, coordinating the entire process from customer demand alignment, order review, production coordination, to delivery and payment collection. It acts as the commercial engine driving market development and business growth.
Bending section
The Sheet Metal Bending Department is responsible for using CNC bending machines and other equipment to accurately shape flat blank parts into parts with specific angles and three-dimensional structures. This is the core forming process for achieving the geometric shape of product designs.
Assembly Department
The Sheet Metal Assembly Department is responsible for the final assembly, connection, and debugging of processed and formed sheet metal parts and purchased parts. It is the final assembly stage that forms the complete product structure and realizes the overall functional requirements.
Clients We've Served
FAQ
Frequently Asked Questions - Custom Sheet Metal Services
Yes. We support 1PC MOQ, no mold tooling required. All custom sheet metal enclosures can be produced directly per your design.
Yes, we accept custom sheet metal fabrication strictly based on your 2D/3D drawings. We provide free DFM checking, follow your exact material, tolerance and finishing requirements. Both prototype and mass production are available with full quality control and export standard packaging.
Absolutely. Send us your product size, assembly function, usage scenario and performance demands. Our sheet metal team offers free structural design, solution tuning and DFM analysis.
You don’t need to prepare drawings; we finish all design work from sketch to production drawing to save your R&D cost and risks. We revise drawings repeatedly to meet your assembly needs perfectly.
We provide 24H DFM drawing review and formal quote after receiving your technical requirements.
Yes. We offer fast prototype sampling according to your drawings, helping you verify structure and size before bulk order.
All our products have obtained ISO9001, EMC, LVD and RoHS certifications.
We fully comply with global safety and quality standards, delivering stable, trustworthy solutions for all project applications.
We operate our own factory and provide one-stop full in-house production.
Strict process control and standardized quality management guarantee stable product quality and punctual delivery, building reliable long-term global partnerships.
We process a full range of standard and high-performance sheet metal materials, including stainless steel (304/316), aluminum (5052/6061), cold/hot rolled steel, galvanized steel, brass and copper. We can also source special materials according to your project requirements.
Our standard machining tolerance is ±0.1mm for laser cutting and bending. For high-precision parts, we can reach ±0.05mm based on material thickness and part structure. All dimensions are 100% inspected before delivery to meet your requirements.
Yes, we provide one-stop full surface treatment services, including powder coating, painting, anodizing, sandblasting, brushing, electroplating, passivation, polishing and heat treatment. We can customize colors and effects according to your design.
Yes, we always sign NDA (Non-Disclosure Agreement) before receiving any drawings or design details from customers. We strictly protect your intellectual property and keep all your projects confidential.
Testimonials
What Our Clients Say
Global Clients’ Real Feedback on Custom Sheet Metal Enclosures & One-Stop Processing Services
"±0.01mm positional accuracy for all interface cutouts. 470 units delivered 3 days early with zero defects. Unmatched precision for our 5G power modules."
Olivia
Chief Procurement Officer, Telecom Systems GmbH
"Sanjun delivered 300 wall-mounted server chassis 4 days early with 100% quality pass rate. Their hybrid ventilation design solved our 24/7 overheating issue, and reinforced structure increased load capacity by 30%. After 6 months of flawless operation, we signed a 3-year exclusive agreement. They are our most reliable sheet metal partner."
Darlene Robertson
Engineering Director, DataEdge Solutions (USA)
"Sanjun solved our toughest challenges: ±0.01mm multi-interface alignment, slim design with 20% enhanced strength, and consistent quality across 800 units. Delivered 4 days early with 100% pass rate. We signed a 2-year exclusive agreement."
Chloe
Product Manager, ProAV Solutions (Australia)
"Sanjun solved all our core challenges: 3.4cm ultra-slim design with 22% higher rigidity, ±0.01mm interface alignment, zero color difference across 1,000 units, and efficient honeycomb cooling. Delivered 5 days early with 100% pass rate. We signed a 3-year exclusive agreement."
Ethan
General Manager, Smart Electronics (Singapore)
"Sanjun solved all our critical challenges: 4.5cm slim rack design with 25% enhanced rigidity, ±0.01mm complex interface alignment, zero color difference across 190 units, and efficient honeycomb cooling. Delivered 2 days early with 100% pass rate. We signed a 2-year exclusive agreement."
David Miller
Technical Director, ProAV Media (Germany)
Fast, professional and high quality. Looking forward to long term business. Thank you!
Lucas
consumer
I am very happy with the product I received. it was exactly as described and very well manufactured. Will do business again.
Eli
consumer
I'd like to thank you and the team at Sanjun for delivering a nicely product to us and on time. We are very pleased with the product and you will get our future business.
Tom
consumer
Sanjun is professional, making sample and mass production cargo Quality is very good! Smooth finish, no scratches. Good packing, no damage during shipment. I'll come back to order again.
Mia
consumer
Sunjun is professional, making sample and mass production cargo Quality is very good! Smooth finish, no scratches. Good packing, no damage during shipment. I'll come back to order again.