Ductile Iron Casting Manufacturer in China – JC Casting
JC Casting is a professional Ductile Iron Casting manufacturer and company in China, operating a modern Ductile Iron Casting factory and casting plant. We specialize in producing high-quality Ductile Iron Casting parts for valves, pumps, pipe fittings, industrial machinery, construction equipment, and other engineering applications.
With proven casting processes, stable material control, and one-stop services from casting to machining and surface finishing, JC Casting is a reliable Ductile Iron Casting supplier for global industries.
What Is Ductile Iron Casting?
Ductile Iron Casting, also known as nodular cast iron or spheroidal graphite iron, is a type of cast iron where graphite forms as spherical nodules instead of flakes. This unique microstructure gives the material superior mechanical properties compared with gray iron:
- Higher tensile strength
- Excellent ductility and impact resistance
- Good wear resistance
- Corrosion resistance comparable to steel
Ductile iron combines the strength of steel with the castability of iron, making it ideal for structural components, high-stress parts, and heavy-duty machinery.
Ductile Iron Casting Materials
As a leading Ductile Iron Casting foundry, JC Casting produces various ductile iron grades to meet international standards and custom specifications.
Ductile Iron Investment Casting Grades
| Tensile strength | Yield Strength | Ductility (elongation) | Brinell Hardness | – | |
| ASTM A536 Grade 80-55-06 (SAE D5506) | 80 ksi | 55 ksi | 6% | 187-255 | – |
| ASTM A536 Grade 60-40-18 (SAE D4018) | 60 ksi | 40 ksi | 18% | 187 maximum | Nominal machining speed of 100 m/mm with carbide tools |
| ASTM A536 Grade 65-45-12 (SAE D4512) | 65 ksi | 45 ksi | 12% | 156-217 | – |
| ASTM A536 Grade 100-70-03 (SAE D7003) | 100 ksi | 70 ksi | limited to 3% | 214-302 | Nominal machining speed of 66 m/mm with carbide tools. 10% lighter than carbon steel |
JC Casting can also produce custom ductile iron grades according to customer requirements, ensuring optimal performance for specific applications.
Ductile Iron Casting Processes
Selecting the appropriate casting process is critical for both quality and cost-effectiveness. JC Casting offers multiple processes to ensure each part meets its functional and dimensional requirements.
Sand Casting
- Flexible for medium to large components
- Cost-effective for low to medium-volume production
- Commonly used for valve bodies, pump housings, and pipe fittings
Shell Mold Casting
- Resin-coated sand shell molds for improved surface finish
- Better dimensional consistency than traditional sand casting
- Suitable for medium-volume production and precision parts
Investment Casting (Optional for Ductile Iron)
- High dimensional accuracy and excellent surface finish
- Ideal for smaller, complex components requiring minimal machining
Our engineering team evaluates part geometry, tolerance, batch size, and production volume to select the most suitable casting method.
Dimensional Accuracy & Surface Finish
JC Casting’s Ductile Iron Casting factory emphasizes precision:
- Near-net-shape casting to reduce post-machining
- Typical dimensional tolerance: ±0.3 – ±0.5 mm
- Surface finish optimized for industrial or functional requirements
- Secondary machining available for tight tolerance or high-precision components
Typical Applications of Ductile Iron Casting Parts
Our Ductile Iron Casting parts are widely used in various industries:
- Valve bodies and industrial valves – reliable for high-pressure and temperature systems
- Pump housings and impellers – wear-resistant for long-term service
- Pipe fittings and flanges – durable and corrosion-resistant
- Industrial machinery frames and components – strong and fatigue-resistant
- Heavy-duty construction and mining equipment – capable of handling extreme loads
JC Casting understands application-specific requirements, producing components tailored to industry demands rather than generic castings.
Quality Control & Standards
Quality is the top priority at JC Casting. Our Ductile Iron Casting company maintains strict standards throughout production:
- Standards: ASTM A536, EN 1563, ISO certifications
- Inspections: Chemical composition, mechanical testing, dimensional checks, and NDT when required
- Traceability: Full batch traceability from raw material to finished casting
This system ensures that every casting meets global industrial standards and customer expectations.
Cost & Lead Time Considerations
Ductile iron casting is more cost-effective than full CNC machining for complex parts. JC Casting provides transparent cost logic:
- Batch size and casting method selection optimize per-piece cost
- Typical lead time: 3–6 weeks depending on component size and complexity
- Process choice (sand casting, shell mold, investment casting) affects tooling and unit cost
One-Stop Ductile Iron Casting Services
JC Casting is not just a foundry; we provide full-service manufacturing:
- CNC machining for precision components
- Heat treatment (normalizing, annealing)
- Surface finishing (polishing, coating, sandblasting)
- Assembly and packaging
Our one-stop service reduces supply chain complexity and ensures timely, high-quality delivery.
Why Choose JC Casting as Your Ductile Iron Casting Manufacturer
- Professional Ductile Iron Casting factory with export experience
- Wide range of materials and casting processes
- Strong engineering and technical support
- Stable quality control and inspection systems
- Reliable Ductile Iron Casting company for long-term partnerships
JC Casting focuses on engineering expertise and consistent quality, making us your ideal Ductile Iron Casting manufacturer and supplier.
FAQ – Ductile Iron Casting
Q1: What is the difference between gray iron and ductile iron?
Gray iron has flake graphite, making it brittle. Ductile iron has nodular graphite, offering higher strength, ductility, and impact resistance.
Q2: Which casting process is best for ductile iron?
Sand casting is most common for large components. Shell mold and investment casting are used for medium to small precision parts.
Q3: What industries use ductile iron castings?
Valves, pumps, pipe fittings, industrial machinery, construction, and mining equipment.
Q4: Can JC Casting produce custom ductile iron grades?
Yes. JC Casting can produce standard grades like GGG40, GGG50, GGG60, ASTM A536 65-45-12, or customer-specified alloys.
Contact JC Casting – Your Trusted Ductile Iron Casting Supplier
If you are looking for a reliable Ductile Iron Casting manufacturer to supply high-quality Ductile Iron Casting parts, JC Casting is ready to support your project.
Contact our technical team today to discuss your drawings, specifications, and production requirements.