Mulan Group is a sand casting services manufacturer located in China, providing high-quality OEM sand casting products.

Provide high-quality sand casting services with the most reasonable factory quotation, use the highest quality raw materials and casting consumables, and run the casting line through advanced automatic mold making equipment.

We have passed ISO9001-2015 quality certification and TS16949 certification, providing sand casting parts for railways, energy pipelines, agricultural machinery, urban construction, construction and other industries.

We can cast different casting parts ranging from 0.5kg to 50kg, attach importance to quality control of castings, strive to meet customer product needs, and provide one-stop technical support and product processing services.

We are committed to delivering 100% qualified sand casting parts through testing methods such as magnetic powder, X-ray, and ultrasonic.

Contact the Mulan MFG team for more information on sand casting parts.


Sand casting parts have many advantages and are widely used in various industries. At present, it is one of the most competitive casting processes.


Low cost:
The cost of consumables and raw materials used in the sand casting process is low, and part of the sand can be recycled.


The sand casting process can complete small weight products. Through reasonable squeezing of sand and vent holes, complete precision castings can be cast.


Wide range of materials:
Suitable for many metal materials, such as steel, iron, non-ferrous metals, etc.


Low-cost molds:
Sand molds are not complicated, and are generally made of wood or aluminum alloy. Compared with die-casting, the mold cost is lower.



Green Sand Molding Casting Services

  • Use a mixture containing water and clay to make a sand mold cavity for sand casting.

Coated Sand Shell Casting

  • Use a mixture containing resin and sand for heating and drying to make the sand mold hard and firm.

Stable Production Capacity And Professional Technical Support Capabilities.

What is sand casting?

Pour the molten metal solution into the sand mold cavity and wait for it to cool, then remove the sand cavity on the outer surface to obtain metal castings. This is an efficient and economical casting process. Sand is the main casting consumable. Sand casting is very suitable. Complex geometric shapes.
In this process, vent holes and liquid metal flow lines are very critical settings, which will affect the quality of castings.

Problems often encountered in sand casting.

1. Thermal cracks

Because the product is not uniform during the cooling process, it causes cracks on the surface and inside of the product. A balanced melt flow rate is the key.


2. Stomatal defects

It is caused by uneven cooling of the product, excessively high temperature of the metal solution, or wrong setting of the sand mold density. The specific reasons should be analyzed for the location and distribution of stomata.


3. Uneven nuclear membrane traces.

Because there is no accurate positioning between the molds, the position is changed during the mold clamping process, which causes the product to shift.


4. Incomplete product

Because the temperature of the molten metal solution is too low, it cools down without smoothly flowing into the corner after being poured into the cavity. Or the casting of the product due to insufficient amount of metal solution.

How does sand casting work?

1. Mold core manufacturing:

The mold core can be made of wood, plastic, metal, plaster, and all prototypes of 3D printed products.


2. Mold shell:

The mold core generally needs a wooden or aluminum cast shell to work together, which can better compress the sand and compress the sand density through vibration.


3. Sand shell cavity:

Sand shell casting requires the resin sand and other mixtures to be put into the mold core and then heated and compressed to form a sand shell cavity with a firm and smooth surface.


4. Casting:

Pour the molten metal slowly into the sand cavity at the specified temperature,


5. Casting parts :

After natural cooling, a complete product is obtained.

  • ▸Gearbox and housing,

    ▸Various valve and filter components,
    ▸Pump components,
    ▸Pump body and casing,
    ▸Gear actuators,
    ▸Counterweight equipment,

  • ▸Flange,


  • ▸Tire shell,
    ▸Brake drum,
    ▸Engine manifold,
    ▸Engine block,
    ▸Steering components and cylinder heads.

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