• Leading Manufacturer Since 2003

  • Four axis vertical type CNC.Precision ≥ 0.01 mm

13 Years focus on Precision Castings

Dongying Vast specialized in casting processing with various surface treatment, precision castings, machined parts, mechanical products and others, casting material mainly include the stainless steel, carbon steel, alloy steel. Just send us your CAD or 3D drawing to get the one-stop tailor made service.

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One Stop Solution For Precision Casting

The process begins with production of a heat disposable pattern. This pattern is usually made by injecting wax into a metal die or mold. Pattern is injected in Horizontal Automatic Injection Machine.

The wax patterns are attached by the gate to a central wax runner system. The runner system is called a sprue. Patterns, runners, and pouring cup compromise the cluster or tree. Radius is provided to all joints between pattern and runner. Same checked thoroughly before coating to avoid rejection due to sand inclusions.

The shell building technique involves dipping the assembly into a ceramic slurry and then into a bed of extremely fine sand. After drying,, the process is repeated. Up to 4 to 6 layers may be applied in this manner.

The completed shell is placed in a steam autoclave where the pattern melts and runs out through the gates and pouring cup.

The ceramic shell molds must be fired to burn out the last traces of pattern material and to preheat the mold in preparation for casting, usually in the range of 800 to 1100 degrees centigrade.

The preheated shell is filled with molten metal by gravity pouring. As the metal cools, the parts, gates, sprue, and pouring cup become one solid casting.

After the metal solidifies and cools, the ceramic shell is then removed by vibratory methods or water blasting.

Casting to be shot blasted to remove all small ceramic particles.

Individual casting is removed from the cluster by means of a cut off wheel or welding cutting.

Remaining gate protrusions are removed by belt grinding.

Casting is heat treated as per specifications.

Finally casting is sand blasted or glass bead blasted as per customer requirement, packed as per customer specification and dispatched.


Our main OEM Precision casting products are castings in stainless steel, carbon steel, alloy steel products serve for many trade as food, chemical, medicine, marine, automatic, architecture etc. 90% for exporting to America, Europe and some Asia countries.



Production capacity of 1,000 tons annually

Fast Reply

We will give you solution within 24 hours


CAD, ODM and 3D printer available

Free Tooling

Free tooling for order over 1,000 pcs


100% inspection before shipment


0.25 inches to 6 inches available

Low Thickness

Wall thickness as low as 0.020 inches

Less Time

Prototypes to production runs in as little as 4-6 weeks

Large Production

Prototype quantities to large production runs

Solid Mold

Shell mold and solid mold capabilities


We will give you solution based on your CAD or 3D drawing within 24 hours !