Leesh is a leading manufacter of the Resin sand casting field – and get well repuation of our material control and quality consistancy.
With decades development, Leesh became the foundry group covering sand casting(Green Sand Casting & Resin Sand Casting) , Investment Casting , Die Castings serve more than 20 countries + more than 100 long term relaship customers.
We have strong engineer team and well maintence facitlity to support as to various material capacity:
Supler Alloy Casting | Heat Resistance Material | Wear Resistance Material | High Strenght Material | Stainless Steel | ADI
ASTM / DIN / GB / ISO /EN Standards
Resin sand casting, also frequently referred to as resin sand molding (RSC), is a widely used manufacturing solution for industries requiring high-performance metal components with complex structural integrity. Unlike traditional green sand casting, which relies on clay and moisture, the resin sand process utilizes a chemical binder to create a rigid, high-strength mold. This makes it the preferred choice for producing large-scale, complex shape, tricky mateiral castings.
Quality Assurance and Customization
By integrating modern RSC technology, we provide a streamlined production cycle that bridges the gap between design and finished product. Whether you require a single prototype or a large production run of complex iron components, our resin sand molding process ensures every piece meets the most rigorous international standards.

Contact our engineering team today to discuss how our resin sand casting solutions can enhance your product’s durability and precision.
Ductile Iron Casting | Gray Iron Casting | Green Sand Cast | Wet Sand Casting | Dry Sand Casting | Water Glass Sand Casting
info@leesh.cn
| Manufacturing Method | Sand Casting(Resin Sand, Pre-Coated Sand, Clay Sand, Water glass sand, Green Sand,lost foam ) |
| Material Standard | GB, ANSI, BS, DIN, JIS, ASTM, ASME, AISI, etc carbon steel, low carbon steel, middle carbon steel, G35, G45, WCB, WCA, WCC, ISO 340-550, etc. Alloy Carbon steel: G25CrMo4, Heat Resistant Steel, etc. Stainless Steel: SUS 304, 304L, 316, 316L, CF8, CF8M, G-X7CrNiNb1189, etc. AS2074 or according to customer specific requirement. Ductile Iron:A536-Gr.60-40-18,GGG40,GGG50,FCD40,FCD50,Gr370-17,Gr420-12,etc Grey Iron:A48-No.20,25,30,GG10,GG15,GG20,FC10,FC15,FC20,Grade 150,180,220,FGL150,FGL200,FGL250,etc |
| Weight Range | 1 kg to 100 Tons |
| General Casting Tolerance | CT8-CT12 |
| Design Software | UG, Pro-E, Inventor |
| Dwg Format | STP, STEP, IGS,STP,X_T ,DXF,DWG , Pro/E, PDF, SLDPRT |
| Mould Manufacturing | Yes |
| Casting Stimulation | Yes |
| Ultimate machining tolerance | 0.005mm |
| Quality Control | RT,UT,MT,PT,CMM,SCAN,Chemical and Mechanical Property Testing,Spectrometer,etc |
| Finish Roughness | Ra12.5-Ra25 according to customer requirement |
| Logo/ID | Silk-screening, Laser Marking, Engrave,Painting |
| Heat Treatment | Normalization, Annealing, Quenching and Tempering, Case Hardening, Nitriding, Carbon Nitriding, Induction Quenching,etc |
| Surface Treatment | Shot/sand blast, Polishing, Surface Passivation, Painting , Anodizing,Powder coating, ED- Coating, Chrome Plating, zinc-plate, Dacromat coating, Finish Painting,hot-dip galvanizing, etc |

Common FAQs About Leesh Sand Casting
1. What is sand casting?
2. What materials can Leesh supply for sand casting?
3. What is the weight range of castings Leesh can produce?
- Cast Steel: 50Kg – 25,000Kg
- Cast Iron: 0.1Kg – 3,000Kg
4. What sand casting processes does Leesh adopt?
- For Cast Steel: Water glass sand, resin sand, coated resin sand (Hot-Box & Shell Molding)
- For Cast Iron: Resin sand, green sand
5. What are the key technical specifications of Leesh’s Green sand casting?
- Dimensional tolerance: CT8–CT12 (per ISO 8062)
- Surface roughness: Ra 6.3–25 μm
- Max part weight: 0.1 kg – 25,000 kg
6. Which industries does Leesh’s sand casting serve?
7. Why choose Leesh’s sand casting services?
- Cost-effective for both small and large production runs
- Compatible with a wide range of metals and alloys
- Flexible in design and size customization
- Shorter lead times for prototype development and bulk production
