Custom Sheet Metal Fabrication | EV&ESS Enclosures | Sanjun Hardware

Home

Clients We've Served

logo1
logo2
logo3
logo4
logo5
logo6
logo7
logo8
logo10
logo11
logo12
logo13
logo14
logo15
logo16
logo17
logo18
logo19
logo20
logo21
logo22
Latest Products

Custom Sheet Metal Enclosures & Parts

View More

Production Process – One‑Stop Sheet Metal Fabrication

About Us

Why Choose SanJun for Custom Metal Enclosures?

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
  • Advanced facilities: AMADA CNC punching & bending machines, laser cutters, automatic riveters
  • 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.
Our advantages:
  • Free Drawing Design Per Your Demand, Customizable
  • 24H DFM Quote, Fast Response & Sampling
  • No mold required, 1PC MOQ
  • Extensive Cases, Professional Fabrication
  • Military-grade quality, Affordable price
  • Qualified with ISO9001, EMC, LVD & RoHS standards
01

Precision & Dimensional Consistency

Tight tolerance guaranteed. Consistent dimension in mass production for perfect seamless assembly.
02

One-Stop Full Process Fabrication

In-house full service from design, laser cutting, bending, welding to coating and final assembly.
03

Stable Quality & On-Time Delivery

Certified stable quality with strict production control. Punctual delivery for long-term reliable cooperation.

    Your Name*
    Email*
    Tel*
    WhatsApp*
    Message*
    No file selected

    1. Upload CAD Files

    Select your manufacturing process and upload 3D CAD files/drawings for custom sheet metal enclosures, cabinets or parts, including material, thickness and quantity.

    2. Get DFM Review & Quote

    Within 24 hours you receive a design‑for‑manufacturability check plus a detailed quotation with pricing and lead time for your sheet metal parts.

    3. Manufacturing Starts

    After approval, CNC punching, laser cutting, bending, welding, finishing and assembly are carried out in‑house according to your CAD and BOM.

    4. Quality Check & Shipping

    All parts and enclosures pass inspection, are securely packed, and shipped on time so they arrive ready for installation.

    5、No drawings available?

    Do not worry. Kindly share your requirements with us, and we will develop production-ready drawings free of charge according to your specifications.

    Latest News

    Insights into Sheet Metal & Custom Enclosures

    View More
    Advanced Thermal Management Strategies for Outdoor Enclosures in Extreme Climates

    Thermal Management for Outdoor Enclosures in Extreme Climates

    Protect BESS & 5G equipment in extreme climates with SanJun Hardware’s custom thermal management sheet metal enclosures. Get a free DFM quote in 24 hours!
    Optimizing High-Density Rack Airflow and Duct Channeling in Custom Rack Enclosures

    Optimize High-Density Rack Airflow in Custom Rack Enclosures

    Discover custom rack enclosures with engineered duct channeling by SanJun Hardware to optimize thermal management, prevent throttling, and lower PUE.
    Streamlining Custom Sheet Metal Fabrication Through Early DFM Analysis

    Streamlining Custom Sheet Metal Fabrication via DFM Analysis

    Eliminate design flaws & cut production costs! SanJun Hardware offers expert DFM analysis & precision custom sheet metal fabrication. Request a quote today.
    Designing Custom Metal Housings for Industrial HMI & Embedded Panel PCs

    Designing Custom Industrial HMI & Embedded Panel PCs Housings

    SanJun Hardware crafts IP65 custom metal enclosures & embedded panel PC housings for harsh industrial automation. Request your free DFM review today!
    Designing Outdoor Battery Energy Storage Enclosures for Variable Climate Regions

    Outdoor BESS Enclosure Design: Climate-Ready Battery Storage

    Build durable outdoor BESS enclosures for extreme climates. Discover SanJun Hardware's custom IP66 sealing, insulation, and corrosion-resistant designs.
    Thermal Optimization Strategies for High-Density 2U Rackmount Chassis Design

    2U Server Thermal Optimization: High-Density Chassis Design

    Beat thermal bottlenecks in high-density 2U chassis. Discover SanJun Hardware's engineered sheet metal, precision shrouds, and custom airflow solutions.
    FAQ

    Frequently Asked Questions - Custom Sheet Metal Services

    FAQ-20260611
    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.
    Latest Case

    Sheet Metal Case Studies | Custom Enclosure Projects

    View More

    25+

    Years Experience

    5000+

    Square Meter Factory

    50+

    Cooperative brands

    2000+

    Types of accessories

    Testimonials

    What Our Clients Say

    Global Clients’ Real Feedback on Custom Sheet Metal Enclosures & One-Stop Processing Services

    What Our Clients Say-01
    "±0.01mm positional accuracy for all interface cutouts. 470 units delivered 3 days early with zero defects. Unmatched precision for our 5G power modules."
    Service 9

    Olivia

    Chief Procurement Officer, Telecom Systems GmbH
    What Our Clients Say-02
    "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."
    Service 10

    Darlene Robertson

    Engineering Director, DataEdge Solutions (USA)
    What Our Clients Say-03
    "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."
    Service 1

    Chloe

    Product Manager, ProAV Solutions (Australia)
    What Our Clients Say-04
    "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."
    Service 2

    Ethan

    General Manager, Smart Electronics (Singapore)
    What Our Clients Say-05
    "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."
    What Our Clients Say-05-1

    David Miller

    Technical Director, ProAV Media (Germany)
    Testimonials7
    Fast, professional and high quality. Looking forward to long term business. Thank you!
    Service 4

    Lucas

    consumer
    Testimonials8
    I am very happy with the product I received. it was exactly as described and very well manufactured. Will do business again.
    Service 5

    Eli

    consumer
    Testimonials9
    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.
    Service 6

    Tom

    consumer
    Testimonials5
    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.
    Service 7

    Mia

    consumer
    Testimonials6
    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.
    Service 8

    Darlene Robertson

    consumer
    Home
    WhatsApp
    Email
    Contacts