Explore our premium product portfolio featuring advanced investment castings, turn-mill solutions, and OEM titanium assemblies designed for high-stress applications.
In modern manufacturing, the concept of "Pure Castings" transcends simple molten metal fabrication. It represents a strict discipline of metallurgical integrity, extreme dimensional accuracy, and optimal material microstructures. As global critical infrastructures push limits, components operating in deep-sea marine environments, high-pressure chemical lines, fast-paced automotive chassis, and micro-precision electronic devices demand zero defects.
Investment casting, historically known as lost-wax casting, combined with state-of-the-art multi-axis CNC machining, represents the ultimate engineering path for near-net-shape parts. This hybrid manufacturing approach addresses major design challenges by minimizing waste and ensuring the grain structures of alloys—whether stainless steel, titanium, aluminum, or carbon steel—are perfectly suited for heavy cyclic loads, corrosive agents, and extreme temperatures.
While raw castings provide high structural integrity and organic geometries, CNC machining introduces the sub-micron tolerances required for critical seals, threads, and mating interfaces. Integration of both processes under one manufacturing footprint eliminates intermediate shipping delays, reduces setup errors, and guarantees one comprehensive quality assurance flow.
Modern applications require tailored chemical compositions. Our facilities process high-grade stainless steels (CF8M, 316L) for chemical resistance, structural carbon steels for load-bearing applications, and advanced titanium alloys (Gr5/TC4) for extreme strength-to-weight ratios in high-stress cycling components.
Established with a vision for absolute precision, Dongguan SX Technology Co., Ltd. brings rich experience to the fields of precision investment casting, multi-axis CNC machining, and complex mechanical assembly. Our capabilities are relied upon by demanding industries globally, including machinery, automotive engineering, marine transportation, shipbuilding, industrial fluid systems, valves and pumps, consumer and industrial electronics, packaging machinery, horology, high-end construction, and chemical processing plants.
By utilizing stainless steel and carbon steel for investment casting, and titanium alloy, stainless steel, carbon steel, aluminum alloy, copper alloy, and cemented carbide for high-precision CNC machining, we offer a comprehensive material portfolio. Our team operates advanced manufacturing equipment and utilizes localized industry clusters in China to deliver cost-efficiency and quick design-to-production cycles.
Continuous industrial innovation since 2014.
Custom engineering solutions delivered across North America, Europe, and Asia.
Why Tier-1 global enterprises select Southern China, particularly Dongguan, as their primary precision casting and high-tolerance CNC machining hub.
From raw metallurgical ingot sourcing and chemical composition certification to heat treatment, multi-axis machining, and passivation coatings—all processed locally within a 50km radius to optimize cost and lead times.
Utilizing high-speed EDM tooling and rapid prototype molds allows us to transition from digital CAD files to functional metal castings in half the standard engineering turnaround time.
Balancing sophisticated automated investment casting lines with skilled custom hand-finishing enables highly efficient production runs for both low-volume custom designs and mass production projects.
Inside our modern facility: where automated lost-wax casting, CNC turning centers, and precision vertical milling machines operate to deliver strict dimensional control.
We maintain strict quality control throughout our casting and CNC machining processes. Quality is the cornerstone of industrial manufacturing. We believe that robust quality control is essential for long-term growth and success. Our commitment to strict quality standards has earned the trust and recognition of our global customer base.
Our facility utilizes professional testing equipment operated by certified QC professionals to verify key dimensional tolerances, surface roughness, and mechanical properties.
Equipped with Coordinate Measuring Machines (CMM), optical comparators, and air-gauging units to maintain tolerances within ±0.005mm.
Direct-reading spectrometer analysis to verify trace element concentrations, alongside ultrasonic and dye-penetrant testing for internal void detection.
Industrial sourcing has transitioned from low-cost seeking to supply chain resilience and technical capability. To support complex engineering requirements, our production pathways are structured to address specific industry challenges:
Seawater pumps, offshore valve manifolds, and chemical reactors require materials that resist localized pitting and chloride stress corrosion cracking (SCC). We cast and passivate CF8M/CF3M stainless steels to create parts that withstand high salinity and acidic working fluids.
Commercial transit and heavy equipment require high fatigue strength. Our investment casting and CNC turning operations deliver steering knuckles, suspension components, and bus brackets using medium-carbon steels and custom aluminum grades designed for structural integrity.
As telecommunication equipment moves toward high frequencies, RF housings and interior cavities require superior thermal management and EMI shielding. We utilize high-purity aluminum alloys processed via CNC machining centers to meet these requirements.
Expert answers addressing alloy specifications, manufacturing tolerances, sourcing requirements, and post-processing protocols for our customers.
For raw investment castings, we typically conform to ISO 8062-3 Grade DCTG 6 to DCTG 8. For CNC post-machined features (such as bearing seats, dynamic seals, and critical threads), we routinely hold dimensions within ±0.005mm (5 microns) depending on the material's thermal properties and part configuration.
We employ advanced mold flow analysis (simulation software) to optimize gating, runner placement, and risers before creating tooling. Additionally, during melt operations, we use argon gas degassing and verify the cast structure using non-destructive testing (NDT), including dye penetrant testing and X-Ray analysis.
Yes. Every production run is shipped with an inspection pack, including chemical analysis (Spectrometer analysis conforming to ASTM standards), mechanical property test reports (tensile strength, yield strength, elongation, and hardness), and dimensional inspection reports.
Rapid prototype tooling can be designed and machined in 10 to 14 days, followed by sample delivery within 7 days. Production tooling typically takes 25 to 30 days depending on complexity, with series production cycles averaging 30 to 45 days.
Yes. We have specialized tooling and rigid multi-axis CNC machines optimized for hard, abrasive materials like Grade 5 (Ti-6Al-4V) titanium, cemented carbide, and nickel-based superalloys. Tool path speeds and cooling strategies are optimized to prevent work hardening and tool wear.
Explore our additional engineering solutions, including automotive investment castings, structural bus components, and heavy-duty building hardware.
SX Machining