China Casting Metal Service & Factories

High-Precision Investment Casting & CNC Machining Solutions for Global Industries

Premium Investment Casting & Machining Products

Explore our custom manufactured metal components, engineered to meet the highest international standards of tolerance, mechanical properties, and surface finish.

High Precision Stainless Steel Investment Casting

High-Quality High Precision Cast Lost Wax Stainless Steel Investment Casting Suppliers, Factories

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Custom Precision Casting Service for Marine Engineering

Custom Precision Casting Service for Marine and Offshore Engineering

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China CNC Titanium Alloy Parts

China Non-standard CNC turning & CNC milling titanium alloy parts Manufacturers, Service

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OEM Stainless Steel Casting Solutions

OEM Stainless Steel Casting Solutions for Marine & Chemical Environments Manufacturers, Products

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OEM Investment Casting Stainless Steel Parts

OEM Investment Casting Stainless Steel Parts for Machinery Service, Factory

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Stainless Steel Precision CNC Machining Parts

High-Quality Stainless steel precision CNC machining parts Manufacturers, Service

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Custom Precision Machined Components

Custom Precision Machined Components - Non-Standard Specifications

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Custom Stainless Steel Casting Valve Components

Custom Stainless Steel Casting Valve Components Product, Factory

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About Dongguan SX Technology Co.,Ltd

Dongguan SX Technology Co.,Ltd has very rich experience in precision casting, CNC machining and assembly. Our products are used in machinery, automobiles, marine, ships, equipment, valves and pumps, electronic appliances, packaging, watches, construction, chemical industry and other industries. The most commonly used materials for investment casting are stainless steel and carbon steel. And the most commonly used materials for CNC machining include titanium alloy, stainless steel, carbon steel, aluminum alloy, copper alloy, cemented carbide, etc.

We have advanced manufacturing equipment and technology and are able to respond quickly to your needs. Established in 2014, our business is founded on continuous improvement and metallurgical excellence. By providing complete vertical integration—from raw tooling design to finish-state multi-axis machining and non-destructive testing—we guarantee that our global B2B clients receive unmatched quality and structural integrity.

Dongguan SX Technology Co.,Ltd Factory Facility
2014
Established Year
0.005mm
Machining Tolerance
100%
Spectrometer Tested
ISO 9001
Certified Quality System

Metallurgical Engineering & Material Technical Roadmap

Modern industrial applications demand mechanical performance properties that extend far beyond baseline material designations. At Dongguan SX Technology Co.,Ltd, our investment casting and CNC machining capabilities are optimized to manage the microstructural alignment of advanced metals.

Lost Wax Investment Casting

Our silica sol investment casting process yields high dimensional accuracy (ISO 8062 CT4-CT6) and excellent surface finishes (Ra 3.2–6.3 μm). By forming high-refractory ceramic shells around precise wax models, we execute complex geometries that eliminate key secondary operations.

Precision CNC Machining

For critical tolerance interfaces down to ±0.005mm, our facility deploys high-speed 3-axis, 4-axis, and 5-axis CNC machining centers. We work with demanding alloys including titanium, duplex stainless steels, and cemented carbides.

Simulation-Driven Engineering

We minimize micro-shrinkage and gas porosity through advanced solidifications modeling software. This predictive technology optimizes gate positioning, runner volume, and pouring speeds prior to steel tooling construction.

Macro-Industry Engineered Solutions

Our multi-industry experience enables us to deliver tailored component solutions that meet strict global regulatory codes and mechanical stresses.

Marine & Offshore Engineering

Operating in aggressive chloride environments requires superior pitting resistance. We supply specialized components made from marine-grade 316L stainless steel and duplex stainless steels, specifically designed to withstand corrosion in pumps, impellers, and underwater propulsion systems.

High-Pressure Chemical & Fluids

Valves and pumps used in petrochemical applications must maintain reliable seal integrity. Our investment-cast valve bodies undergo hydrostatic pressure testing and helium leak detection to guarantee leak-free operation under high pressures.

High-Speed Packaging & Machinery

For dynamic machinery, reducing inertial weight without sacrificing strength is a major design priority. We specialize in producing lightweight, high-performance titanium and aerospace-grade aluminum components, precision CNC-machined to exact specifications.

China Industry 4.0: Supply Chain Resilience & Cost Optimization

Located in Dongguan, the world's leading hub for advanced hardware manufacturing, Dongguan SX Technology Co.,Ltd leverages a highly integrated industrial ecosystem to ensure supply chain stability and cost efficiency.

Vertical Production Ecosystem

From raw materials and chemical analysis to heat treatment and final protective coatings, our entire production cycle is managed locally. This regional concentration eliminates transit bottlenecks and reduces administrative lead times.

Advanced Automation in Ceramic Shell Molding

Our modern casting facility features climate-controlled drying rooms and automated slurry dipping. This clean-room setup ensures consistent slurry coating thickness across all wax patterns, preventing defects in the final cast components.

Real-time Production Monitoring

We use an integrated Manufacturing Execution System (MES) to track order progress at every stage of production. From initial mold building to final visual inspection, our systems keep clients informed with accurate lead times and delivery updates.

SX Technology Advanced Production Automation

Our Advanced Production Workshop

Take a look inside our high-precision casting and CNC machining facilities in Dongguan, built for efficiency and strict quality control.

Production Workshop Area 1
Production Workshop Area 2
Production Workshop Area 3
Production Workshop Area 4
Production Workshop Area 5
Production Workshop Area 6
Quality Control Inspection Laboratory

"Quality is the cornerstone of the manufacturing industry. We firmly believe that only by controlling quality well can we survive, develop, and get better and better. Therefore, we have been working in this industry unremittingly since 2014 and continue to Improve the company's team and improve the company's production capacity."

Quality Control & Metrology

We have professional testing equipment and professional QC personnel, and we adhere to strict tolerances and quality standards for the products we produce. Due to our insistence on strict quality requirements, we have been praised by many customers.

To support global B2B procurement requirements, our quality verification processes include:

  • Spectrometric Analysis: Direct-reading optical emission spectrometers (OES) verify chemical composition and heat traceability before pouring.
  • Dimensional Verification: Coordinate Measuring Machines (CMM) and optical micro-projectors verify dimensions against CAD prints.
  • Non-Destructive Testing (NDT): Dye-penetrant testing and magnetic particle inspection are used to verify structural soundness.
  • Mechanical Properties Evaluation: Tensile, impact, and Rockwell/Brinell hardness testing verify conformance to material specifications.

Technological Roadmap & Future Outlook

As manufacturing needs evolve, Dongguan SX Technology Co.,Ltd continues to invest in emerging technologies to support modern casting and precision machining.

Patternless Additive Rapid Casting

To accelerate product development and support short-run manufacturing, we are integrating direct-wax 3D printers. This process bypasses traditional toolmaking for prototypes, reducing lead times from weeks to days.

Carbon Reduction & Energy Management

We are working to reduce environmental impact by upgrading to high-efficiency induction furnaces. These systems help lower total carbon emissions per ton of finished metal, supporting environmental compliance.

AI-Assisted Surface Defect Inspection

We are incorporating computer-vision cameras on our finishing lines. These systems automatically scan and detect minor surface anomalies, assisting our QC inspectors in maintaining uniform surface finishes.

Localization, Global Standards, & IP Protection

Working with international buyers requires reliable IP protection, clear documentation, and strict adherence to global engineering standards.

Strict IP Protection Protocols

We enforce secure data handling procedures for all customer designs. Customer CAD files are managed in offline databases, and access is restricted to authorized engineers under formal NDA terms.

Conformance to Global Material Specifications

We cast and machine metals to international standards, including ASTM, DIN, JIS, and BS. Mill test reports and chemical certifications accompany every shipment for complete traceability.

Frequently Asked Questions (FAQ)

Get detailed technical answers regarding our manufacturing processes, capabilities, quality standards, and logistics policies.

What dimensional tolerances can Dongguan SX Technology Co.,Ltd maintain?
For investment cast parts in the raw state, we achieve tolerances of ISO 8062 CT4 to CT6. For post-cast precision CNC machining, we can hold critical dimensions to within ±0.005 mm depending on part geometry and material.
Which metal grades are most commonly used in your facility?
We work with a variety of materials. For casting, we primarily use stainless steels (such as CF8, CF8M, CF3M, and Duplex 2205) and carbon steels. For CNC machining, we handle titanium alloys (including Ti-6Al-4V), aluminum alloys (such as 6061-T6 and 7075), copper alloys, and cemented carbides.
How do you test and prevent internal defects like porosity?
We design gating and feeding systems using solidification simulation software to prevent shrinkage cavity defects. For production, we perform non-destructive testing (such as liquid dye penetrant or X-ray inspection) and pressure leak testing for valve and pump components.
Are chemical composition reports provided with your casting services?
Yes. We verify the chemical composition of each melt batch using an optical emission spectrometer before pouring. A complete material test report (MTR) showing compliance with standard specifications is provided with every shipment.
What is the typical B2B lead time for custom tooling and production samples?
Under normal conditions, custom tooling design, mold production, and first article sample submissions (with full dimensions and layout reports) take 20 to 30 calendar days. Production runs generally require 30 to 45 days after sample approval.
How does SX Technology protect intellectual property and design data?
We handle customer IP through secure databases. Access to CAD files is limited to designated design engineers, and technical details are protected under mutually signed Non-Disclosure Agreements.

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