Suijin Machinery is a leading manufacturer specializing in auto part lost wax casting (also known as investment casting). We provide high-performance, mission-critical components for the global automotive industry, delivering complex geometries with tight tolerances and superior surface integrity.
Leading provider of auto part lost wax casting. We produce complex geometries in stainless steel & alloy steel with Ra 1.6μm finishes. Low-cost, high-volume OEM solutions.
Technical Specifications & Capabilities
| Feature | Specification / Detail |
| Process | Precision Lost Wax Casting (Investment Casting) |
| Material Options | Stainless Steel, Alloy Steel, Carbon Steel, Ductile Iron, Aluminum |
| Tolerance Range | CT4 – CT6 (Up to ±0.05mm) |
| Surface Roughness | Ra 1.6μm – 3.2μm |
| Weight Range | 0.1kg – 50kg |
| Certifications | ISO 9001:2015, IATF 16949 |
| Testing Available | X-Ray, MPI, UT, Tensile Strength, Spectrometer Analysis |
Key Advantages of Our Investment Casting Process
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Complex Geometry: Capable of producing intricate internal cooling channels and thin-walled sections impossible for traditional sand casting.
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Superior Surface Finish: Our auto part lost wax casting results in a smooth finish that reduces friction in moving engine parts.
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Material Integrity: Consistent metallurgical properties ensure parts withstand high-pressure and high-temperature environments.
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Cost-Efficiency: Minimal material waste and high repeatability make this ideal for OEM mass production.
Automotive Applications
Suijin Machinery produces a wide array of components designed for durability and performance:
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Engine Components: Turbocharger housings, valve bodies, and manifolds.
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Chassis & Suspension: Control arms, brackets, and steering knuckles.
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Braking Systems: Caliper brackets and hydraulic valve components.
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Powertrain: Gearbox components and transmission housings.
Why Partner with Suijin Machinery?
With over 20 years of expertise in auto part lost wax casting, Suijin Machinery bridges the gap between traditional craftsmanship and modern CNC precision. Located in the industrial hub of Ningbo, China, we offer a seamless supply chain from design prototyping to final heat treatment and surface coating.
Our Commitment: Every component undergoes rigorous dimensional inspection and material traceability analysis to ensure it meets international IATF 16949 standards.
