Custom sheet metal, not off-the-shelf — built around your exact requirements.
Every cabinet on this page was built for a specific project. Your dimensions, materials, protection grade, door layout and cable entries are all decided by you — we handle structure design, process planning, fabrication and testing. This page shows what we have done and what we can do for your project.
SanJun Hardware is an experienced OEM & ODM sheet‑metal manufacturer specializing in custom air‑cooled ESS AC‑DC integrated cabinet housings for global energy‑storage integrators and EPC contractors.
Overseas energy‑storage buyers frequently face tough custom‑manufacturing pain points:
‑ No mature structural drawings and expensive third‑party design expense
‑ Cabinet deformation under heavy‑weight battery pack load
‑ Mismatched air‑cooling duct structure, poor heat dissipation efficiency
‑ Failed outdoor sealing causing dust and water ingress
‑ Uneven welding seams and insufficient anti‑corrosion performance for long‑time field deployment
We solve these headaches with our core service: **100% free production‑ready CAD drawing design based on your project requirements. No self‑designed drawings from clients are required.**
Our complete manufacturing process includes high‑precision laser cutting, CNC bending, heavy‑load reinforced welding, reserved air‑cooling duct mounting positions, customized sealing structure, reinforced frame treatment and weather‑resistant powder coating. We strictly control machining tolerance, guarantee stable mechanical performance for heavy‑duty energy‑storage equipment.
Application Scenarios
Utility‑scale energy‑storage stations, industrial & commercial energy‑storage projects, off‑grid power supply systems, new‑energy power generation supporting projects.
No drawings? No problem. Send your power module specs — our engineers deliver manufacturable CAD drawings free of charge, saving you $500+ in third-party design fees and weeks of engineering time.
Get My Free CAD DesignFully custom sizes matched to your power module, battery bank and maintenance clearance.
SPCC, SGCC galvanized, SUS304 or Aluminum 5052; 1.0–3.0 mm per load and budget.
IP54–IP55 sealing packages; upgraded gaskets and glands for harsher environments.
Single / double / front-access / rear-access doors with custom locks and hinges.
Bottom or side entries, sealed gland positions and sizes to your wiring plan.
Vents, fans, heat exchangers or AC integration — engineered to your heat load.
| Custom BESS Energy Storage Cabinet — Capability Range | |
|---|---|
| Material Options | SPCC / SGCC galvanized steel / SUS304 stainless steel / Aluminum 5052 |
| Thickness Range | 1.2 – 3.0 mm (reinforced for battery rack load) |
| Protection Grade | IP54 – IP65 waterproof and dust-proof |
| Surface Treatment | Outdoor weather-resistant powder coating, 60 – 80 μm |
| Thermal Management | Air-cooled / liquid-cooled integration, fan or AC cutouts |
| Fire & Safety | Fire-rated partitions, exhaust vents, sensor mounting points |
| Cable Entry | Bottom / side sealed glands sized to your busbar layout |
| Mounting | Floor-standing with adjustable leveling feet / pad-mount base |
| Rated Capacity | Sized to your pack — from 50 kWh to multi-MWh containers |
| Packaging | Export-grade plywood case with anti-rust film |
* All parameters are adjustable to your project. Contact us for a tailored engineering proposal.
Dimensions, module layout, or even a hand sketch — any format works.
Our engineers review manufacturability and propose structure optimizations.
Production-ready drawings delivered for your confirmation. Unlimited revision until approved.
First article produced with full QC report and photos for your approval.
Batch fabrication with in-process inspection at every critical step.
Export plywood packing, FOB/CIF/DDP shipping, 12–24 months warranty.
Quality inspection reports and photos are provided with each order, so you can confirm workmanship before the goods leave our factory. Third-party inspection (SGS / TÜV / BV) is welcome.
Request QC Report SampleSend specs → factory-direct quote in one business day. Volume pricing: unit cost typically drops 30–50% at 100+ pcs.
T/T 30% deposit, 70% balance before shipment. Sample orders and long-term partners: flexible terms available.
FOB, CIF and DDP supported. Export-grade plywood case with anti-rust film as standard.
12–24 months against manufacturing defects. Responsive after-sales with replacement parts support.
SanJun Hardware supplies custom BESS enclosures to energy storage integrators, solar EPCs and battery manufacturers worldwide. Tier-1 storage brands trust us with their cabinet programs — most started with a prototype and scaled to repeat container orders.
Send your power module specifications — free CAD design and factory-direct quotation within 24 hours.
Get Free Design & Quote
