Forging aluminum is a major component of modern manufacturing industry...
Expert Sand Casting Solutions
We offer professional and flexible sand casting services to meet your diverse metal part casting needs, ranging from simple to complex, small to large batches, and standard to high precision requirements.
• Wide Range of Material
• Multiple Casting Processes
• Value-Added Services


Sand Casting Services
Versatile and flexible sand casting processes, precisely tailored to your project needs


Green Sand Casting
The most cost-effective option, the first choice for high-volume production.
- Lowest cost and short production cycle
- High efficiency and suitable for automated production lines
- Suitable for small to medium-sized cost-sensitive castings
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Resin Sand Casting
Ideal for high-precision, complex-shaped, high-quality surface castings.
- High dimensional accuracy and good surface finish
- Capable of producing highly complex and thin-walled parts
- Suitable for a wide range of materials, eg, cast steel, alloys.
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CNC Finishing
The complete solution for precision-machined, assembly-ready cast components.
- Achieve critical tolerances and surface finishes for sealing, bearing, or mating surfaces.
- Eliminate supplier handoffs with single-source casting and machining
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Materials & Post Processing
Rich material and post processing options, tailor solutions that best suit your projects
Casting Metals
Casting Iron
Gray cast iron(ASTmA48 Class 35), Ductile cast iron(A536)
Casting Steel
Carbon Steel, Low Alloy Steel, Stainless Steel
Post Processing
Sand Blasting
Remove oxide scale/clay sand layer and improve surface roughness
Bead Blasting
Steel shot peening forms a stress layer, enhancing fatigue strength
Polishing
Machinical polishing and chemical polishing for smooth surface
Heat Treatment
Annealing, quenching + tempering, solution treatment
Coating & Painting
Powder coating or painting for enhanced appeal and corrosion resistance
Need Different Options?
As an expert metal foundry, HDC can provide the best solution in casting process, material configuration, composition analysis, physical property testing, heat treatment technology, etc
Industries We Serve
Sand casting serves the global industry by its ability to produce large and complex castings


Automotive
Large, complex, and strength-proof parts in engines, transmissions, and chassis


Heavy achinery
Large-size equipment infrastructure parts such as frames and enclosures


Energy Equipment
Housings, impellers, etc., parts that need to withstand high pressure and high temperatures


Aerospace
Non-critical load-bearing structural parts, engine peripheral components, tooling fixtures, etc


Shipbuilding
Marine engine parts, propulsion system components, deck machinery, outfitting parts, etc


Building Hardware
Iron castings that require some strength, wear resistance, or decorative properties


Agricultural Machinery
Large housings, gearboxes, brackets, etc. for tractors, harvesters and other machinery
Rigorous Quality Control for Your Sand Castings
At HDC, we understand that reliable, high-performance castings are critical to your success in demanding markets. Backed by ISO & IATF certifications, we combine strict processes with advanced technology to ensure precision, durability, and reliability for your critical components.








Material Composition Verification
Optical Emission Spectrometer:
Ensures precise alloy chemistry for performance.
Mechanical Property Testing
Tensile & Hardness Testers:
Validates critical mechanical properties.
Dimensional & Geometric Precision
Coordinate Measuring Machine (CMM):
Ensures perfect fit and function.
Surface & Internal Integrity
Automated FPI Line:
Reveals hidden defects for integrity.
Why Choose HDC for Sand Casting
HDC boosts your business with delicate engineered sand casting service
Certified Excellence, Global Standards
- ISO 9001,14001,45001, IATF 16949 Certified
- Rigorous systems trusted by automotive & industrial leaders worldwide.
Precision Engineered for Critical Applications
- Resin Sand + CNC Finishing Capabilities
- From intricate prototypes to high-volume production with CMM-verified accuracy.


Beyond Inspection: Quality by Process Design
- Spectrometer → FPI Line → Full Traceability
- Proactive control from molten metal to shipment, not just final checks.
Responsive Partner, Not Just a Supplier
- Dedicated Engineering Support
- Your technical challenges solved with DFM feedback and rapid iterations.
Sand Casting Material Selection Guide
Sand casting is a highly adaptable casting process, it is suitable for almost all metals, such as carbon steel, stainless steel, aluminum, copper, and titanium.
When it comes to material selection, here are some main aspects you should consider:
1. Functional Requirements:
- Shock Absorption & Vibration Damping ⇒ Gray Iron
- Wear Resistance + Moderate Strength ⇒ Ductile Iron
- Extreme Load Capacity ⇒ Carbon/Alloy Steel
- Corrosion Resistance ⇒ Stainless Steel
- Lightweight + Heat Dissipation ⇒ Aluminum
2. Working Environment:
- Corrosive Conditions (Seawater/Chemicals): 316 Stainless > Aluminum > Ductile Iron
- High-Temperature (>400°C/750°F): Carbon steel > Ductile iron
- Heavy Wear & Friction: Chrome alloy steel > Ductile iron
- Food/Medical Applications: 316 Stainless Steel
3. Cost Consideration:
- High budget & Performance First:
Stainless steel/alloy steel + resin sand casting & CNC finishing - Balanced Budget:
Ductile iron/aluminum + resin sand for core structures + CNC finishing only on critical areas. - Cost-Sensitive Projects:
Gray iron + green sand casting + limited machining


FAQ
Get answers for key concerns before you request a quote
We can cast parts ranging from 1kg to over 3,000 kg. We handle complex shapes across this size range. If you have different dimensional requirements, please contact us for details.
We primarily cast in various types of iron (gray iron, ductile iron) and steel (carbon steel, low-alloy steel). We also cast some non-ferrous alloys like aluminum bronze. Ask us about your specific material needs.
The standard "as-cast" surface finish is typical for sand casting. We can achieve smoother finishes through secondary processes like machining or polishing if your design requires it.
Sand casting has standard tolerances based on the part size and material (often following standards like ISO 8062). We achieve tighter tolerances on critical dimensions through careful patternmaking, process control, and CNC finishing.
Yes, we can design and manufacture the patterns (molds) needed for casting your part through drawings or samples. We can also work with patterns you provide if they meet our specifications.
Lead time depends on part complexity, pattern availability, and order size. For standard parts with existing patterns, production can often start within 4-8 weeks. New parts require patternmaking time first. Contact us for a specific quote.
Our MOQ is flexible. We work with both small prototype orders and large production runs. The best price is usually for larger volumes, but we welcome inquiries for any quantity.
We offer machining services as an option. We can supply raw castings ("as-cast") or provide castings machined to your final drawing specifications.
We have extensive experience shipping castings worldwide, including to Europe, North America, Australia, and New Zealand. We arrange secure packing and reliable freight forwarding. Shipping costs depend on weight, size, and destination.
Standard terms are often T/T, with a deposit required to start production and the balance before shipment. We can discuss terms based on order size and history.
Yes, we operate responsibly. We reclaim and reuse sand where possible. We follow environmental regulations and strive to minimize waste. Specific certifications can be discussed upon request.
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