Precision-engineered outdoor waterproof electronic cabinets built to your exact specifications
From initial concept to final delivery –every detail of this custom fabrication project
A global shared-mobility operator needed 2,000 cabinets to stock charging power banks across shopping malls, transport hubs and scenic spots in Southeast Asia. The tropical setting set hard requirements: IP55 sealing for sudden downpours, cooling that survives 35-45C heat, anti-theft strength, a light enough body to install on site, and a UV-stable finish that will not fade.
After evaluating nine sheet metal suppliers, the operator chose Sanjun for our outdoor electronics track record and automated production line.
Outdoor shared-use cabinets face a stack of conflicting demands:
The hardest conflicts were:
Our R&D ran fluid-dynamics simulation and settled on 30-degree downward-angled louver holes plus a waterproof breathable membrane, keeping internal air under 38C even in 45C ambient with no spray leakage over 24 hours.
For weight, we used 6061-T6 aluminum for non-load brackets and added CNC-formed reinforcing ribs at stress points, lifting strength by 40% without thicker steel – final weight landed at 42kg. A UV-stable polyester coating (over 3% UV absorber), controlled to 60+/-5um, passed a 3-year accelerated aging test with Delta-E under 1. Automated lines and CMM checks held batch deviation to 0.15mm.
All 2,000 cabinets shipped in 45 days, five days ahead of the 50-day deadline, with a 100% pre-delivery pass rate.
Eight months in tropical service showed zero water seepage, zero coating fade and zero structural deformation, with battery modules running cool and stable. The operator then signed on for 3,000 more units across additional countries.
Sanjun solved the exact outdoor pain points that stalled our rollout – sealing, weight, UV resistance and mass consistency – and delivered five days early.
Eight reasons global brands partner with SanJun Hardware for precision sheet metal fabrication
Quality-managed production with documented processes and full traceability at every stage.
Streamlined scheduling and capacity planning ensure your orders ship when promised.
Expert design-for-manufacturing review at no cost –optimize your design before production.
Sheet metal ±0.1mm and CNC machining ±0.01mm –consistent accuracy across every batch.
From laser cutting and bending to welding, coating and assembly –all under one roof.
CMM inspection, coating adhesion tests, and 100% final inspection before every shipment.
Prototypes from 1 unit to production runs of 10,000+ –scalable capacity to match your needs.
Work directly with our engineering team –fast responses, clear updates, no middlemen.
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