Precision CNC Machining Services

Achieving ±0.005mm Tolerances with Brother & Fanuc Centres.
Dual-Shore Manufacturing: China (Ningbo) & Malaysia (Perak).

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CNC Machining Parts BOLANG PRODUCTS

We CNC machine sealing faces to Ra 0.8 flatness for perfect EMI gasket contact, combined with precision rigid tapping for high-density screw hole arrays..

EMI Shielding 5G Base Station Filter Housing

5G Filter Housing

Large format casting with integrated heatsink fins. Precision machined gasket grooves.

Silver Plating Ready Microwave Cavity Filter Body

Microwave Cavity

High Q-factor design. Internal surface polished for subsequent silver plating.

Small Form Factor Optical Transceiver Housing

Optical Transceiver

Small, precise zinc/aluminum die casting for fiber optic modules.

Flatness 0.02mm Heat Sink with Machined Pedestals

Machined Pedestals

Fly-cutting of mounting pedestals to ensure zero air gap for PCB thermal transfer.

Lightweight Satellite Communication Bracket

Sat-Comm Bracket

Structural support with machined pivot points for antenna alignment.

IP65 Rated Router Switch Enclosure

Router Enclosure

Outdoor ruggedized housing. CNC machined cable entry ports.

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Beyond the Machine Shop

Most machine shops fail when processing castings because they do not understand the underlying metallurgy. A beautifully machined part is worthless if revealing the sub-surface exposes porosity.

At Bolang & Rongkun, we integrate the process. By optimizing the mold flow in our Die Casting Phase, we ensure that even deep cuts and heavy material removal on 53mm thick walls reveal a dense, porosity-free structure.

  • Material Stability: Stress-relief processes to prevent deformation after machining.
  • Fixture Engineering: In-house design of hydraulic 4-axis fixtures for rigid clamping.
  • Traceability: Full material certification from ingot to finished part.

Technical Capabilities & Equipment

We employ a fleet of 13+ advanced machining centres, including Brother Speedio S700Z1 and Fanuc Robodrill units, specifically chosen for their high-speed tapping and milling efficiency on aluminium alloys.

Parameter Specification Capability
Positional Tolerance Up to ±0.005 mm
Machining Axes 3-Axis, 4-Axis, and 5-Axis Simultaneous
Max Work Envelope 800mm x 500mm x 400mm
Primary Materials Aluminium (A380, ADC12, 6061, 7075), Zinc (Zamak 3, 5)
Secondary Ops Tapping, Reaming, Boring, Thread Milling
Brother Speedio S700Z1 CNC Machine in Bolang Factory

Strategic Manufacturing: Rongkun (Malaysia)

For US-based clients seeking to mitigate tariff impacts and diversify supply chain risks, our wholly-owned subsidiary in Perak, Malaysia offers a seamless solution.

Rongkun Metal Products Sdn. Bhd. is not a trading office; it is a fully operational factory mirroring our Ningbo HQ’s equipment standards (LK Die Casting & Brother CNC).

  • Tariff Mitigation: Avoid Section 301 tariffs.
  • Logistics: Proximity to Penang Port.
  • Quality: Managed by senior engineers from Bolang HQ.
Rongkun Malaysia Factory Exterior View

Frequently Asked Questions

Q: Can you machine parts that were cast by other suppliers?

Yes, we offer standalone CNC machining services. However, we recommend our integrated “Cast + Machine” service to guarantee material consistency and reduce rejection rates due to hidden casting defects.

Q: What is your capacity for high-volume orders?

With our fleet of Brother Speedio centres, we are optimized for high-volume production (100k+ units/year). These machines offer ultra-fast tool changes, significantly reducing cycle time and unit cost.

Q: How do you handle surface finishing after machining?

We provide a complete finish. After machining, parts can be polished, shot-blasted, or powder-coated in-house or via certified partners, ensuring the final cosmetic appearance meets your specifications.

Ready to Optimise Your Supply Chain?

Whether you need IATF-certified precision or a Malaysia-based manufacturing partner, we deliver.

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