Precision CNC Brass Parts – Tight Tolerances & Superior Stability

BIE – Your Partner for High-Performance Brass Machining

BIE specializes in the precision CNC machining of brass components, delivering superior dimensional accuracy, smooth surface finish, and consistent quality for demanding applications.
With over 15 years of manufacturing experience, we provide complete brass machining solutions—from prototype to full-scale production—ensuring every component meets the highest mechanical and visual standards.

Whether you require complex connectors, decorative fittings, or precision inserts, BIE’s CNC brass machining delivers durability, conductivity, and an unmatched surface finish.

Why BIE Stands Out

Precision You Can Measure: Our advanced CNC milling and turning systems achieve tolerances as tight as ±0.01mm, with critical dimensions controlled within ±0.005mm, ensuring stable performance in precision assemblies.
Material Expertise: We specialize in machining various brass alloys such as C3604, C3771, C46400, and H59/H62, providing optimal solutions for electrical, mechanical, and decorative parts.
Superior Surface Quality: Brass naturally provides a clean, bright, and corrosion-resistant surface. Combined with our finishing options—polishing, plating, brushing, or coating—we achieve both functional and aesthetic excellence.
Efficient and Flexible Production: From small-batch prototypes to mass production, we deliver rapid turnaround while maintaining strict quality consistency. Prototype in 3–7 days, mass production in 20–30 days.
One-Stop Manufacturing: Our in-house capabilities cover CNC machining, turning, drilling, surface finishing, and assembly, ensuring full process control and faster delivery.
ISO-Certified Quality: We operate under an ISO 9001:2015 system with traceable inspection records, guaranteeing repeatable precision and global-standard reliability.

At BIE, we combine high-precision CNC technology with deep material knowledge to manufacture brass parts that meet both structural and decorative requirements:
CNC Milling & Turning: Multi-axis machining for complex geometries and tight fits.
Threading & Drilling: High-speed and accurate hole-making for connectors and fittings.
Polishing & Plating: Enhanced surface luster and corrosion resistance.
Assembly & Finishing: In-house post-processing ensures perfect fit and visual appeal.
Design-for-Manufacturability (DFM): Engineering review to optimize geometry, cost, and durability.

1.Design Submission: Provide your 2D/3D files (STEP, IGES, DWG, etc.) or samples with tolerance and finish requirements.
2. Raw Material Procurement: We source certified brass materials with guaranteed chemical composition and mechanical strength.
3. CNC Machining: Precision milling, turning, and drilling to achieve exact dimensions and smooth surfaces.
4. Surface Finishing: Choose from polishing, plating, brushing, or coating for enhanced appearance and protection.
5. Inspection & Testing: Full dimensional, visual, and conductivity checks with CMM and surface testers.
6. Packaging & Shipment: Protective, export-grade packaging with detailed inspection reports included.

We adhere to rigorous technical specifications to guarantee consistent strength and precision for every CNC steel part:

Brass offers a naturally smooth and corrosion-resistant surface, but BIE enhances it further through advanced finishing processes designed for both durability and visual excellence:

Key Surface Finishing Processes & Applications

BIE’s CNC brass machining solutions support industries where precision, conductivity, and durability are equally critical:
Electronics & Electrical
Connectors, terminals, and conductive housings requiring high electrical performance and long-term stability.
Automotive
Sensor housings, valve components, and precision inserts providing strength and vibration resistance.
Plumbing & Fluid Systems
Fittings, valves, and couplings with superior sealing and corrosion resistance.
Aerospace
Lightweight, dimensionally stable brass components for control systems and precision mounts.
Medical & Instrumentation
Sterile, non-corrosive brass housings and fixtures for precision diagnostic and laboratory devices.
Architectural & Decorative Hardware
Polished or brushed brass parts for lighting fixtures, handles, and design elements combining strength and visual appeal.

Integrated Manufacturing

From machining to finishing, every process is handled under one roof. This ensures stable dimensions, consistent surface quality, and faster project turnaround.Beyond cnc machining, we also offer complementary services like sheet metal fabrication and plastic injection molding to meet your comprehensive manufacturing needs.

Quality Control

Material Verification: All brass materials are sourced from certified suppliers, with incoming inspection reports verifying chemical composition and hardness.
In-Process Monitoring: Critical dimensions are verified at each machining stage to ensure stability, accuracy, and consistency throughout the entire manufacturing process.
Final Inspection: Before shipment, all finished brass components undergo coordinate measuring machine (CMM) inspection and surface roughness testing.
Full Traceability: Each order is fully traceable from raw material to final inspection. Detailed inspection reports include dimensional data, surface finish results, material batch records, and process logs.

Reliable Delivery & Support

BIE’s engineering team provides full technical support from design review to production optimization:
·Prototype: 3–7 days
·Mass Production: 20–30 days (depending on complexity)
·Packaging: Custom anti-scratch, moisture-resistant packaging for safe transport
·Support: Dedicated engineering and logistics assistance from quotation to after-sales
Our goal is simple — to help customers achieve higher product performance, lower cost, and faster market delivery.

Looking for CNC brass parts that combine accuracy, durability, and superior aesthetics?
Contact BIE today — our experienced engineers and manufacturing team are ready to support your next project with precision-crafted brass machining solutions that enhance both performance and appearance.