OEM Investment Castings Manufacturers & Supplier

Precision-Engineered Metal Castings and CNC Machining Solutions Custom Built for Rugged, High-Performance Industrial Ecosystems Worldwide.

The Evolution of Modern Investment Casting

Whitepaper Insight: Bridging legacy metallurgy with Industry 4.0 standards

Silica Sol Dimensional Superiority

Modern precision demands are moving away from water glass casting toward Advanced Silica Sol processes. This ensures highly controlled surface roughness (Ra 1.6 to 3.2 μm) and superior dimensional tolerances (ISO 8062 CT4-CT6), minimizing downstream machining requirements.

Lightweighting & Alloy Innovation

High-stress applications, particularly in marine and aerospace, require materials with superior strength-to-weight ratios. The strategic implementation of specialized Titanium Alloys (Ti-6Al-4V) and duplex stainless steels ensures high-integrity, anti-corrosive performance under extreme deep-sea or high-pressure conditions.

Digital-Twin Casting Simulation

Integrating computerized thermodynamic solidification software allows engineers to detect internal shrink porosities and optimize gating structures before pouring starts. This results in prototype iteration speedups, drastically reducing tooling costs and production lead times.

About Dongguan SX Technology Co.,Ltd

Advanced Engineering, Casting, and CNC Machining Under One Roof

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.

Precision Castings

Stainless steel & carbon steel solutions

CNC Machining

Titanium, copper, alloys & cemented carbide

Dongguan SX Technology Co.,Ltd Facility

Strategic Sourcing & Global Procurement Solutions

Providing critical supply chain assurance, metallurgical consistency, and absolute technical compliance for global procurement managers.

Total Cost of Ownership (TCO)

We reduce expensive secondary machining costs by offering near-net-shape castings. Achieving CT4-CT6 tolerances straight from the mold optimizes material yield and reduces downstream processing expenses.

Risk Mitigation & Material Traceability

Complete material control is standard. Every batch includes spectrometer reports, trace chemical composition validation, mechanical testing certificates, and non-destructive testing verification.

Co-Engineering & Design (DFM)

Our production engineers analyze design files to simplify parting lines, optimize draft angles, and select suitable alloy compositions to ensure efficient, defect-free production runs.

2014
Est. Year of Industry Expertise
±0.005mm
Ultra-Precise CNC Tolerances
100%
Traceable Material Verification
Zero-Defect
Quality Inspection Target

State-of-the-Art Production Facility & Infrastructure

Tour our CNC precision workshops and investment casting lines designed for high accuracy and rapid volume production scaling.

SX CNC Machining Workshop Area 1
SX CNC Machining Workshop Area 2
SX Production Machining Center
SX Precision Casting Finishing Line
SX High Speed Multi-Axis CNC Machining
SX Quality Assembly and Inspection Center

Combining precision casting with our fully integrated, multi-axis CNC machining capabilities allows us to deliver turnkey components directly to your production lines. Dongguan SX Technology Co.,Ltd offers advanced casting techniques alongside high-speed Milling, turning, and 5-axis CNC machining, ensuring complex features and critical tolerances match your prints precisely.

Quality Assurance Testing Equipment at SX
End-To-End Metrology & Testing

Uncompromised Quality Control Framework

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.

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.

Spectral Analysis

Direct-reading spectrometer verification of every melt chemistry profile.

CMM Precision Metrology

Coordinate Measuring Machines verify complex 3D profiles and tight dimensional tolerances.

Macro Solutions Across Core Verticals

Providing structural integrity and precision parts built to resist pressure, wear, and oxidation in demanding operating environments.

Marine & Deep-Sea Applications

Our custom titanium alloy parts and marine-grade stainless steels are engineered to resist galvanic corrosion, pitting, and chloride stress cracking, providing reliable service life in high-pressure offshore operations.

Pumps, Valves & Chemical Fluid Control

Producing complex thin-walled valve bodies, impellers, and pump housings in high-purity corrosion-resistant alloys. Internal fluid channels are kept clean and smooth to limit cavitation and pressure drop.

Heavy Machinery & Transport Equipment

Offering wear-resistant carbon steels and low-alloy steels heat-treated for superior tensile strength, fracture toughness, and impact resistance in mining, agricultural, and transportation environments.

Localization Support & Global Compliance Assurance

Delivering certified compliance, cross-border customs logistics support, and dedicated customer service representatives globally.

Compliance / Standard Dimension Our Operational Target Strategic Benefit for Global Buyers
ISO 9001:2015 Certifications Strict application of systematic quality management procedures throughout casting and machining processes. Guarantees batch-to-batch repeatability and minimizes incoming component rejection rates.
Material Compliance (RoHS & REACH) Verification that all alloys used are free from restricted heavy metals and conform to EU environmental directives. Ensures problem-free customs clearances and compliance for consumer-facing and industrial products.
Dimensional Verification Standards Standard adherence to ISO 8062 CT4-CT6 casting tolerances and ISO 2768-m CNC tolerances. Assures that interfaces and critical installation surfaces align with target assembly parameters.
Customs & Trade Logistics Experienced container loading, export documentation, and customs classification handling. Avoids unexpected logistical delays, supporting reliable Just-in-Time (JIT) manufacturing schedules.

Technology Roadmap & Engineering Outlook

Our vision for the future of investment casting and high-precision CNC manufacturing.

PHASE 01

Tool-less Rapid Prototyping

Integrating SLA/SLS 3D printing of wax patterns to bypass expensive steel tooling. This allows for rapid verification of physical prototypes within days rather than weeks.

PHASE 02

Robotic Automation Shell Building

Transitioning to robotic slurry dipping and stucco coating lines. Automating shell production ensures uniform thickness, reduced mold cracking, and more consistent finishes.

PHASE 03

Green Foundry Practices

Upgrading induction furnaces for energy efficiency and recycling closed-loop wax materials, reducing waste and aligning with the global target of green manufacturing.

Technical Specifications FAQ

Addressing standard technical queries from procurement managers and design engineers.

Which casting tolerance standards do you guarantee?
Our investment casting process uses silica sol molds, ensuring dimensional tolerances compliant with ISO 8062 CT4 to CT6. For features requiring tighter tolerances (up to ±0.005mm), we offer finishing passes via our in-house CNC machining center.
What metals and custom alloys can Dongguan SX Technology Co.,Ltd process?
For investment castings, we work primarily with stainless steel (304, 316, 316L, 17-4 PH, Duplex) and carbon steel (WCB, LCC, 1020, 1045). For CNC machining, we support titanium alloys (Grade 5 / Ti-6Al-4V), carbon steels, aluminum alloys (6061-T6, 7075), copper, brass, and cemented carbides.
How do you guarantee material integrity and prevent internal porosity?
We run computer-aided mold design simulations to predict and optimize solidification patterns. Each batch undergoes optical spectrometer testing for chemical validation. We also provide non-destructive testing (NDT), including liquid penetrant inspection (LPI) and radiographic X-ray testing for critical components.
What are the lead times for custom tooling and initial samples?
Standard tooling design and mold construction require 15 to 25 days depending on the structural complexity of the part. Initial sample inspection reports (ISIR) and physical sample deliveries are completed within 7 to 10 days after mold approval.
Do you accept small-batch pilot orders?
Yes. We accommodate small-batch trial production runs. This support allows clients to verify designs and market viability before scaling up to high-volume production tooling.
How do you protect international intellectual property (IP)?
We follow strict internal information security protocols. Non-disclosure agreements (NDAs) are established before reviewing any design files, and access to customer drawings is restricted solely to project engineers and production managers.