Sand casting
Sand casting is a casting method that uses sand molds to shape and produce metal objects and components. Sand casting is one of the oldest known casting processes and is valued for its flexibility, cost-effectiveness, and ability to create complex shapes.
Sand casting offers great versatility in terms of the size and weight of the castings it can produce. It is suitable for small-scale custom productions and large-scale industrial applications such as automobile parts. This process is particularly useful when the desired outcome needs to have specific features or internal cavities.
There are several sand casting process based on different mold materials. At — Foundry, we can proceed the sand casting process by green sand casting, pre-coated resin sand casting and furan resin sand casting. The pre-coated resin sand casting is also called shell molding casting or shell casting. The shell casting process has much better surface
In our high-tech facilities, we offer both manual molding  and automatic machine operations in sand casting workshop.  we can pour gray and ductile iron castings using  no-bake process up to 1 ton finished weight in gray iron castings and ductile iron castings, and up to 0.5 tons in steel castings and stainless steel castings


Description | Â Molding by hand | Molding by AutomaticMachines |
Max size of Castings | 1,500 mm×1000 mm×500 mm | 1,000 mm ×800 mm×500 mm |
Casting Weight Range | 1kg-500 kg | 1kg-800 kg |
Annual Capacity | 5,000 tons | 8,000 tons |
Casting Tolerance | According to customer apply for | |
Casting Metal &Alloys | Gray Iron,Ductile Iron,Carbon Steel,Alloy Steel,Stainless etc |

- Gray Cast lron: HT150, HT200,HT250,HT300,HT350, EN-GJL-100,EN-GJL-150, EN-GJL-200, EN-GJL-250, EN-GJL.300,EN-GJL-350:GG10,GG15,GG20,GG25,GG30,GG35, GG40: ASTM A48
- Gray lron Grades Class 20, Class 25.Class 30, Class 35,Class 40,Class 45, Class 50, Class 55, Class 60.
Ductile Cast lron (Nodular Cast lron): GGG40,GGG45,GGG50,GGG60,GGG70.GGG80: EN-GJS-400-18. EN-GJS40-15. EN-GJS-450-10.ENGUS-500-7,ENGUS-600-3,EN-GJS-700-2 EN-GJS-800-2: QT400-18. QT450-10. QT500-7QT600-3. QT700-2. QT800-2. ASTM A536 Ductile lron Grades 60-40-18. 65-45-12.70-50-05.80-60-03. 100-70-03. 120.90-02.
- Carbon Steel. Alloy Steel
- Aluminium and aluminum Alloys
- Brass and Copper-based Alloys
- Stainless Steel / Duplex Stainless Steel
Other Alloys as request or according to ASTM, SAE, AISI, GOST, DIN, EN, ISO, and GB
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Our Spectrometer checks 15 chemical elements and metallurgical microscope produces high-resolution images 1.000times magnified, and our cleanliness meter detemmines particle size and auantity to ensure materals meet or exceed theinternational standard. RlC use ultrasonic detectors to discover flaws, and have X-ray machines and accelerators thatcan scan castings with 200 mm maximum wall thickness
SIYUAN Foundry have  a full range of inspection capabilities in house, which include.
1.Spectrographic and manual quantitative analysis
2.Metallographic analysis
3.Brinell, Rockwell and Vickers hardness inspection
4.Mechanical property analysis
5.Low and normal temperature impact testing
6.Cleanliness inspection
7.UT, MT and RT inspection

Sand casting parts could serve in many industries including hydraulics cylinder parts, automotive parts, Commercial truck parts, railroad trains, logistics, agricultural and tractor machinery, valve and pump part..etc. The castings mainly are used as gearbox housing, pressure pump housing, engine blocks, cylinder heads, transmission box bracket, wheel hub, connecting rods, manifolds…etc

Casting and Forming: Investment Casting, Sand Casting, Gravity Casting, Shell Mold Casting, Forging, Â CNC Machining and sheet Metal Fabrications
Heat treatment:Â Quenching, Tempering, Normalizing,Annealing, Carburization, NitrotionSurface treatment: Anodizing, Zinc-plating, Polising, GeoMet, Zintek….etc
Testing Service:Â Chemical Composition, Mechanical Properties, Fluorescent or Magnetic Penetration inspections (FPl,MPl),X-rays, Ultrasonic Testing
