One-Stop Custom Sheet Metal Fabrication
Our integrated sheet metal workflow covers cutting, bending, forming, welding and surface finishing to produce high-precision enclosures and structural components. We serve energy storage, power distribution, EV charging, industrial control, self-service kiosk and digital signage industries.
As a dedicated OEM sheet metal manufacturer, Sanjun Hardware delivers full custom fabrication from your CAD designs, including material selection, process planning and turnkey assembly. We specialize in medium and large enclosures such as ESS cabinets, power enclosures, charging housings and display casings, with strict control over dimensional accuracy, heat dissipation and ingress protection for reliable system performance.
Our Standard Sheet Metal Fabrication Process
Standardized Workflow | Stable Quality & On-Time Delivery
We follow a strict standardized process to ensure consistent quality, precise compliance and reliable lead time:
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Material Selection
We select cold-rolled steel, galvanized steel, stainless steel and aluminum by strength, corrosion resistance and cost to match your application.
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Cutting
CNC punching and laser cutting deliver accurate dimensions and burr-free edges, lowering assembly rework and improving fitting.
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Bending
CNC press brakes form precise angles for seamless assembly of cabinet doors, panels and covers.
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Forming
Stamping, rolling and punching create complex profiles, brackets and structural reinforcements.
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Welding
Skilled welders produce high-strength, clean joints for rigid and aesthetic enclosures and frames.
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Surface Treatment
Powder coating, painting and plating provide durable corrosion protection and premium visual finish.
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Assembly
We pre-assemble hardware and accessories per BOM, reducing your on-site installation workload.
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Quality Inspection
Full dimensional, appearance and functional checks ensure compliance with your drawings and industrial standards.
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Packaging & Delivery
Secure packaging protects products, with on-time shipment to your warehouse or project site.
Send your CAD drawings to us, and our team will offer professional DFM design optimization to simplify your supply chain.
Common Sheet Metal Materials
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Cold-Rolled Steel
Cost-effective with high strength and good formability for indoor cabinets, frames and brackets.
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Electrolytic Steel
Smooth surface and fine finish ideal for precision housings and commercial equipment.
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Galvanized Steel
Excellent corrosion resistance for outdoor power boxes, distribution cabinets and EV charging enclosures.
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Stainless Steel
Superior rust resistance and sleek appearance for medical, food and high-end outdoor installations.
Our engineers can recommend the best material grade based on your working environment and performance needs.
Tolerances & Surface Finishing
Trusted Sheet Metal Tolerance Control
We enforce strict tolerance management for laser cutting, bending, countersinking and assembly, ensuring perfect part compatibility and seamless fitting. We work with you to set practical tolerances balancing performance and manufacturing cost.
Premium Finishing for Protection & Branding
We offer anodizing, bead blasting, powder coating, electroplating, polishing, brushing, silkscreen printing and passivation. Our finishes meet functional protection and aesthetic demands, supporting IP-rated outdoor enclosures and luxury display housings with customized color, texture and weather resistance to enhance your brand image.
Why Global Customers Choose Sanjun Hardware
Trusted by partners in energy storage, power, industrial automation and display sectors, we deliver professional engineering backing, stable mass production quality and reliable delivery. Many projects begin with custom prototype enclosures and develop into long-term strategic cooperation for serialized sheet metal product supply.
