From micro-tubing and precision laminated busbars to complex multi-axis aerospace and medical housings, explore our verified engineering components manufactured to critical tolerances.
China’s sheet metal forming sector has transitioned beyond basic contract fabrication into a digitally unified, high-precision engineering ecosystem that drastically compresses prototype-to-production lifecycles.
Located in Shenzhen and Guangdong's Greater Bay Area, our production infrastructure benefits from immediate access to certified primary mills (aluminum, cold-rolled steel, stainless steel, and specialty copper alloys), precision tooling houses, surface finish treaters, and deep-water container ports within a 50-kilometer radius.
Unlike Western counterparts where hard tooling lead times stretch between 12 to 18 weeks, our Shenzhen mold centers utilize high-speed wire EDM and 5-axis CNC machining to finish progressive stamping dies, compound stamping stations, and hydroforming tooling sets in as little as 15 to 25 business days with in-die sensor integration.
We eliminate non-recurring engineering waste by combining multi-station progressive stamping with precision CNC post-machining. Sunmy's bilingual senior tooling engineers conduct thorough DFM analysis to minimize bend interference, eliminate thinning on deep-drawn radii, and optimize sheet nesting to yield material efficiencies over 88%.
The sheet metal fabrication horizon has shifted toward smart cyber-physical systems. Examine how Sunmy integrates ultra-high-power fiber lasers, closed-loop servo brakes, and finite-element springback modeling into everyday production.
Utilizing state-of-the-art fiber optical oscillators with nitrogen-assist cutting capabilities, our facilities achieve burr-free edge qualities on reflective alloys (aluminum 5052/6061, copper C1100, and brass) up to 25mm thickness, holding edge perpendicularity to ISO 9013 Class 1 standards without post-grinding.
Springback calculation is dynamically handled through real-time laser angle monitoring on all-electric servo press brakes. By adjusting ram penetration depth per sheet thickness variation across material coils, we maintain repeatable bend tolerances within ±0.2° across high-yield automotive steels.
Before tooling steel (Cr12MoV, SKD11, or D2) is machined, complex deep-drawn enclosures undergo non-linear FEA stamping simulations. This virtual forming validation predicts thinning limits, localized strain concentrations, and wrinkling hazards, reducing trial iterations by over 75%.
Sheet metal forming is not a generic commodity—every industry imposes rigorous metallurgical and environmental performance constraints. We design and fabricate custom assemblies tailored to severe operational demands.
Production of multi-layer laminated copper flexible busbars, aluminum prismatic battery pack top covers, and liquid-cooling cold plates. Assemblies deliver ultra-low resistance, withstand 2,500V DC breakdown tests, and satisfy UL 94 V-0 flame-retardant requirements.
Precision stamped 19-inch 1U-4U server chassis, drive trays, EMI shielding gaskets, and blind-mate liquid manifold enclosures. Manufactured using high-tolerance sheet zinc-plated steel (SECC/SGCC) with strict squareness control to ensure effortless robotic rail insertion.
Cleanroom-compatible medical equipment skins, centrifuges, and in-vitro diagnostic instrument enclosures formed from 304/316L stainless steel. Surfaces are treated with fine passivation, micro-bead blasting, and anti-microbial medical-grade powder coatings.
Structural gussets, internal cable carrier links, robotic arm mounting plates, and high-strength cycloidal gearbox covers where mass minimization aligns with exceptional torsional rigidity via 5052-H32 aluminum deep draws and flanged ribs.
IP66/NEMA 4X weather-sealed outer enclosures for utility-scale PV string inverters. Engineered with formed drip-lips, continuous polyurethane (FIPG) robotically dispensed gaskets, and multi-stage anti-corrosion chemical conversion pre-treatments.
Lightweight sheet magnesium-lithium and titanium alloy formed heat-sink shields, avionics sub-racks, and brackets produced in strict compliance with AS9100 quality traceability, featuring spot-welded or structural adhesive-bonded architectures.
Clear, contractually binding manufacturing tolerances and parameters verified under ISO 2768-m/f standards and laser-calibrated coordinate measuring machines (CMM).
| Forming Operation | Supported Materials | Thickness Range | Standard Tolerance | Precision Class (DFM Review) |
|---|---|---|---|---|
| Fiber Laser Profiling | Carbon Steel, SS304/316, Al 5052/6061, Brass | 0.5 mm – 25.0 mm | ±0.10 mm | ±0.05 mm |
| CNC CNC Servo Bending | All Formable Sheet Alloys | 0.6 mm – 12.0 mm | ±0.25 mm / ±0.5° | ±0.10 mm / ±0.2° |
| Progressive Die Stamping | Cold Rolled Steel, Copper C1100, Beryllium Copper | 0.1 mm – 6.0 mm | ±0.05 mm | ±0.015 mm |
| Hydraulic Deep Drawing | Deep Draw Quality Steel (DC04), Aluminum 1050/3003 | 0.5 mm – 4.0 mm | ±0.15 mm (Depth ±0.25) | ±0.08 mm |
| Robotic Laser Welding | Stainless Steel, Carbon Steel, Aluminum Alloys | Joint Depths 0.8 – 6.0 mm | Weld Seam ±0.15 mm | Hermetic Leak-Tight (100% He Test) |
| CNC Secondary Finishing | All Metals (Bores, Reaming, Facing, C'sinks) | Up to 500 mm envelope | ±0.01 mm | ±0.005 mm |
Navigating transnational procurement requires total predictability across quality, tariff classifications, material integrity, and technical data confidentiality.
We provide automotive-grade Part Submission Warrants (PSW), Design Failure Mode and Effects Analysis (DFMEA/PFMEA), Process Flow Diagrams, Control Plans, Gage R&R studies, and Full Dimensional Measurement reports mapped to 2D drawing balloon callouts via high-precision Zeiss and Hexagon CMM platforms.
Sunmy executes enforceable, bilingual Non-Disclosure Agreements (NDAs) prior to receiving proprietary STEP, IGES, or DXF files. Because our clients work directly with our owned facility engineering team without brokers or secondary trading entities, your intellectual property remains locked inside our secure, encrypted servers.
Clear answers to critical procurement, tooling ownership, surface treatment, and quality validation inquiries.
We employ a three-tier compensation protocol: (1) Spectral chemical analysis and tensile yield testing of every inbound steel and aluminum coil; (2) In-house dynamic bend angle compensation utilizing laser-assisted servo press brakes that monitor elastic recovery in real time; (3) Over-bending and crowning adjustments built directly into custom tooling based on finite element AutoForm springback simulation models.
The client retains 100% unencumbered legal ownership of all custom tooling, dies, fixtures, and specialized inspection gauges upon completion of tooling milestone payments. All tooling is laser-marked with your asset tracking codes, maintained in dedicated climate-controlled storage at our Shenzhen plant, and can be transferred upon request at any juncture.
Our turnkey surface treatment programs encompass: sulfuric acid anodizing (Type II and Type III hardcoat with PTFE impregnation), chromate conversion coatings (SurTec 650, Alodine 1200/1500), electro-polishing, chemical passivation (ASTM A967), TGIC polyester and polyurethane powder coatings, electrophoretic deposition (E-coating), zinc plating with trivalent passivates, and cleanroom vacuum packaging.
Exported sheet metal enclosures and cosmetic covers are vulnerable to vibration scratching, oil vaporization, and salt-air oxidation. We engineer custom vacuum heat-sealed barrier pouches with silica gel desiccant packs, high-density custom-molded EPE foam cradles, corner edge-protectors, and ISPM-15 certified fumigated wooden shipping crates designed to pass rigorous ISTA 2A/3A drop and vibration standards.
From knurled feed rollers and custom manifold blocks to high-precision robotic gear housings and surgical implants, review our extended manufacturing production scope.