What tolerances can Suhang Metal hold for custom CNC machined parts?

We hold standard tolerances per ISO 2768-m/f and tight precision CNC tolerances down to ±0.01 mm (±0.0004 inches) with surface finishes down to Ra 0.8 μm (32 μin), verified by CMM and optical inspection.

Do you sign NDAs and provide PPAP / FAI documentation for European and US buyers?

Yes. We sign bilateral NDAs prior to reviewing CAD files and provide First Article Inspection (FAI) reports, material mill certificates (EN 10204 3.1), RoHS/REACH compliance, and PPAP Level 3 packages upon request.

Suhang Metal CNC vertical machining center workshop in Suzhou, China

ISO 9001:2015 Certified Contract Manufacturer • Suzhou, China (1 Hr to Shanghai Port)

Precision CNC Machining, Aluminum Extrusion & Metal Stamping for Global OEMs

From 1-piece rapid prototypes to 100,000+ automotive and industrial production runs. We machine and form custom aluminum, steel, stainless steel, and brass components to ISO 2768 and ±0.01 mm (±0.0004″) tolerances—backed by full CMM inspection, PPAP/FAI reporting, and 24-hour English engineering DFM support.

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Engineering Spec Snapshot

CNC Milling & Turning: 3, 4 & 5-Axis (±0.01 mm / ±0.0004″)
Surface Roughness: Ra 0.8 μm (32 μin) as-machined
Extrusion & Stamping: 6061/6063/7075, CRS, SS304/316
In-House Finishing: Anodizing, E-Coat, Powder Coat
Quality & Compliance: ISO 9001, FAI, PPAP, RoHS/REACH
Export Terms: EXW, FOB Shanghai, CIF, DAP, DDP

5,000+ m²

54,000+ sq.ft. Suzhou Facility

20+ Years

OEM & Tier-1 Export Track Record

±0.01 mm

±0.0004″ CMM-Verified Precision

1 to 100k+

Flexible MOQ: Prototype to Mass Run

Integrated Contract Manufacturing

One-Stop Metal Manufacturing Under One Roof

European and North American engineering teams choose Suhang Metal to eliminate multi-vendor supply chain friction. We integrate extrusion, precision CNC milling/turning, progressive die stamping, and surface finishing in a single quality-controlled workflow.

3-axis, 4-axis and 5-axis CNC machining centers at Suhang Metal

3, 4 & 5-Axis CNC Machining

High-speed vertical machining centers and CNC turning lathes for complex housings, impellers, flanges, and mounting blocks. Tolerances to ±0.01 mm (±0.0004″) per ISO 2768-f.

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Automotive metal stamping and deep drawing press line

Progressive Stamping & Deep Drawing

High-repeatability stamped brackets, amplifier mounting frames, AVAS acoustic brackets, subwoofer baskets, and protective chassis in CRS (SPCC/DC01), aluminum, and stainless steel.

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Custom aluminum extrusion CNC bending and surface treatment

Aluminum Extrusion & Surface Finishing

Custom extruded thermal heatsinks, EV battery/motor enclosures, and CNC stretch-bent frames in 6061/6063-T5/T6, finished with Type II/III anodizing, cathodic e-coating, or powder coating.

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Proven Component Portfolio

Engineered for Automotive Audio, EV & Industrial Electronics

We manufacture custom-to-print metal hardware for demanding acoustic, thermal, and structural environments—including aluminum heatsinks, amplifier mounting brackets, AVAS (Acoustic Vehicle Alerting System) brackets, speaker baskets, CNC impellers, and precision bearing housings.

Full Material Traceability: EN 10204 3.1 mill test certificates & RoHS/REACH compliance on every shipment.
Automotive Quality Tools: FAI (First Article Inspection), CPK/SPC tracking, and PPAP Level 3 documentation.
Export-Grade Packaging: VCI anti-rust bags, custom EPE foam trays, and ISPM-15 heat-treated pallets.

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