As a vertically integrated sheet metal processing company based in Jiashan, Zhejiang, China, Zhejiang Jiafeng Electrical & Mechanical Co., Ltd. controls every fabrication step under one roof — from raw-material entry to final electromechanical assembly. This single-source model eliminates inter-supplier handoff errors, compresses lead times, and gives customers a single quality-accountable partner for complex, multi-process orders.
Our engineering team works to Design for Manufacturability (DFM) principles — a methodology documented in ISO/TR 29837 and widely adopted by leading OEMs — to identify geometric simplifications and material substitutions that reduce part cost by 10–30 % without compromising function. Coupled with fiber laser cutting accuracy of ±0.05 mm and CNC press-brake repeatability within ±0.3°, Jiafeng delivers the precision that power distribution, semiconductor handling, medical, and telecom customers demand.
The table below maps each manufacturing stage to its purpose, key equipment, and the quality standard applied. All processes are performed in-house at our Jiashan facility.
| # | Process Stage | Key Equipment / Method | Achievable Tolerance | Quality Reference |
|---|---|---|---|---|
| 1 | DFM Review & Programming | CAD/CAM software, nesting optimization | — | ISO/TR 29837 DFM guidelines |
| 2 | Laser Cutting | Fiber laser 3,000 W – 12,000 W | ±0.05 mm | ISO 9013 thermal cutting quality |
| 3 | NCT Punching | CNC punch 1,500 × 3,000 mm; 45 T – 260 T | ±0.1 mm hole position | ISO 2768 general tolerances |
| 4 | CNC Bending / Press Brake | Salvagnini auto bender; CNC press 35 T – 250 T | ±0.3° bend angle | ISO 2768-m angularity |
| 5 | CNC Drilling & Tapping | IDLE-1325 16T centre; M2.5 – M10 riveting | ±0.02 mm positional | ISO 286 hole tolerance grades |
| 6 | Robotic Welding | Laser weld 3,000 W; CO₂ robot; TIG; stud weld | AWS D1.1 weld class B | ISO 5817 weld quality level B |
| 7 | Surface Electroplating | Auto zinc line 56,000 mm; SS cleaning line | 96 – 128 h salt-spray | ASTM B117 salt-spray test |
| 8 | Powder Coating | 2 coating lines; 3 curing ovens; 21-slot pre-treatment | 60 – 120 µm DFT | ISO 12944 corrosion categories |
| 9 | Quality Control & Inspection | CMM ±1.9+3L/1000 µm; RoHS/XRF analyser; vision CMM ±50 µm | ±0.005 mm (CMM) | ISO 10360-2 CMM performance |
| 10 | Electromechanical Assembly | Level-5 assembly lines; PCB / wire / sensor integration | Per customer BOM | IPC-A-620 wire-harness; IEC 61439 |
* Tolerance ranges are achieved under standard production conditions. Tighter specifications are available for critical applications — contact our engineering team for details.
Material choice governs mechanical performance, corrosion resistance, weight, and total cost. The following reference table — drawn from standard material specifications including ASTM A1008 (cold-rolled steel), ASTM A653 (galvanised steel), EN 10088 (stainless steel), and AA 5052 / AA 6061 datasheets — covers the alloys most frequently processed at our facility.
| Material | Tensile Strength | Density (g/cm³) | Corrosion Resistance | Typical Surface Finish | Best Applications |
|---|---|---|---|---|---|
| SPCC Cold-Rolled Steel | 270 – 370 MPa | 7.85 | Low — coating required | Powder coat, painting, zinc plating | Enclosures, chassis, structural brackets |
| Galvanised Steel (GI / HDG) | 270 – 370 MPa | 7.85 | Good (Zn layer ≥ 60 g/m²) | Powder coat, primer | Outdoor cabinets, HVAC, cable trays |
| Stainless Steel 304 (1.4301) | 515 – 720 MPa | 7.93 | Excellent (18 % Cr, 8 % Ni) | Brushed, polished, passivated | Food equipment, medical, telecom |
| Stainless Steel 316 (1.4401) | 485 – 690 MPa | 7.99 | Superior (+ 2 % Mo, pitting resistant) | Electropolished, brushed | Marine, chemical, pharmaceutical |
| Aluminium 5052-H32 | 195 – 260 MPa | 2.68 | Very good — marine-grade alloy | Anodising, powder coat | Electronic panels, transport, signage |
| Aluminium 6061-T6 | 276 – 310 MPa | 2.70 | Good (heat-treatable) | Anodising, clear coat | Structural machined parts, heat sinks |
| Copper C110 (ETP) | 220 – 250 MPa | 8.94 | Moderate — patinas naturally | Tin plating, passivation | Bus bars, contacts, heat exchangers |
Sources: ASTM A1008/A1008M, ASTM A653/A653M, EN 10088-1, Aluminum Association AA 5052 / AA 6061 datasheets, ASTM B170 (copper C110). Values are representative ranges; final mechanical properties depend on thickness, temper, and processing method.
Jiafeng supplies sheet metal fabricated components and sub-assemblies across eight primary verticals. Each industry column identifies the typical product types, the dimensional or surface specifications most commonly requested, and the compliance standards our quality system supports.
| Industry | Typical Sheet Metal Products | Key Spec Requirements | Applicable Standards |
|---|---|---|---|
| Power Distribution | Switchgear enclosures, bus-bar housings, cable-management trays | IP54+ ingress; 96 h salt spray; 1.0 – 3.0 mm steel | IEC 61439, UL 508A |
| Semiconductor Equipment | Process-tool frames, wafer-handling brackets, cleanroom panels | ±0.05 mm flatness; Ra ≤ 0.8 µm; electropolished SS | SEMI S2, ISO 14644 cleanroom |
| Medical Devices | Instrument housings, surgical trolleys, sterile trays | 316L SS; passivated; no sharp edges; FDA-compliant finish | ISO 13485, FDA 21 CFR Part 820 |
| Telecommunications | Network racks, PCB enclosures, EMC shields, outdoor cabinets | EMI/RFI shielding ≥ 40 dB; IP55; RoHS-compliant | IEC 61000 EMC, RoHS 2011/65/EU |
| Industrial Automation | Robot cell guards, conveyor frames, control-panel doors | Weld quality ISO 5817 level B; powder coat 80 µm DFT | ISO 5817, EN ISO 9692 weld prep |
| Financial & Retail Equipment | ATM chassis, vending-machine structures, self-service kiosks | Anti-tamper; cosmetic-grade paint; ±0.1 mm assembly fit | IEC 62443 (security), CE marking |
| Renewable Energy | Inverter housings, solar-tracker frames, battery enclosures | Outdoor C3/C4 corrosion category; UV-stable coat | ISO 12944 C3/C4, IEC 62109 |
| Data Centres | 19″ server racks, hot-aisle containment panels, cable ladders | EIA-310-E rack standard; powder coat black RAL 9005 | EIA-310-E, TIA-942, RoHS |
When evaluating sheet metal processing companies, buyers typically benchmark on process range, tolerance capability, surface-finish variety, compliance documentation, and lead time. The table below positions Jiafeng against typical industry thresholds, based on published capability criteria from SME (Society of Manufacturing Engineers) and the Fabricators & Manufacturers Association International (FMA).
| Capability Criterion | Industry Baseline | Jiafeng Performance | Verification Method |
|---|---|---|---|
| Laser cutting tolerance | ±0.1 – 0.2 mm | ±0.05 mm | Vision CMM ±50 µm, first-article report |
| Bend angle repeatability | ±0.5 – 1.0° | ±0.3° | Digital angle gauge, 100 % bends for critical parts |
| CMM dimensional accuracy | ±0.01 – 0.03 mm | ±0.0019 mm (high-precision CMM) | ISO 10360-2 performance qualification |
| Salt-spray corrosion resistance | 72 h (ASTM B117) | 96 – 128 h | In-house ASTM B117 test chamber |
| Powder-coat film thickness | 60 – 80 µm DFT | 60 – 120 µm, controlled per ISO 2178 | Elcometer DFT gauge, batch records |
| Weld quality classification | ISO 5817 Level C (intermediate) | ISO 5817 Level B (stringent) | Visual + dye-penetrant inspection |
| RoHS / REACH screening | Supplier declaration only | XRF analyser on every batch (1 – 10 ppm sensitivity) | In-house XRF; test report issued per order |
| Vertical integration | Typically 3 – 5 in-house processes | 10 processes — cutting through assembly | Factory audit; single-source supply chain |
Our fiber laser systems cut steel from 0.5 mm up to 20 mm, and aluminium up to 16 mm. CNC press brakes handle sheet up to 3,200 mm in length, accommodating standard enclosure panels and large structural frames. For thicker plate beyond 20 mm, our precision machining department provides milling and turning capability.
Yes. Our electromechanical integration division assembles complete systems — wiring, PCBs, sensors, actuators, and industrial computers — inside the fabricated enclosures or structures we manufacture. This one-stop solution is especially valued by OEM customers who want to reduce approved-supplier complexity and streamline inbound logistics.
Jiafeng operates under a certified quality management system and maintains certifications relevant to our target industries. Full certification details are available on our Certifications page. Our in-house laboratory is equipped with CMM systems (ISO 10360-2 qualified), XRF element analysers for RoHS/REACH verification, tensile testers, and salt-spray chambers — enabling us to issue material and dimensional certificates with every order.
We accept orders from single-prototype stage through to high-volume mass production. Our OEM/ODM programme provides DFM feedback, prototyping, pilot runs, and ramp-up to full production within an integrated project-management framework, ensuring tooling and fixture costs are amortised efficiently across the programme lifecycle.
We accept 2D DXF / DWG files for flat-pattern cutting and 3D formats including STEP (.stp / .step), IGES (.igs), SolidWorks (.sldprt / .sldasm), and PDF drawings for reference. Our CAM team can also work from scanned drawings or reverse-engineer from physical samples for legacy components. Send your files for a free DFM review →
From your first CAD file to a fully tested, assembled product — Jiafeng's 10-process in-house capability eliminates the supplier fragmentation that inflates cost and extends lead times. Explore our related services or contact our engineering team today.
