Custom Cast Parts Manufacturer | OEM Metal Castings

Product Details


Cast Parts Manufacturer | Custom OEM Metal Castings

Qingdao Zhaoyuqi Machinery Co., Ltd. manufactures custom cast parts and OEM metal components for machinery manufacturers, equipment companies, engineering contractors, and industrial distributors.

We produce cast parts according to 2D engineering drawings, 3D CAD files, physical samples, and customer specifications. Depending on the component design, material, production volume, and required accuracy, suitable manufacturing processes can be evaluated before production.

Our casting capabilities can support components used in industrial machinery, agricultural equipment, motorcycles, automotive applications, construction equipment, pumps, valves, and other mechanical systems.

A cast part is not simply a piece of metal produced in a mold. The final performance of a casting depends on the relationship between material, part geometry, mold design, casting process, machining requirements, and inspection criteria.

For this reason, our OEM process starts with engineering review rather than immediately selecting a casting method.

Send us your drawing, CAD file, or sample for a casting evaluation.

What Are Cast Parts?

Cast parts are metal components manufactured by pouring molten metal into a mold and allowing it to solidify into the required shape.

Casting is widely used for components with shapes that may be difficult, expensive, or inefficient to manufacture entirely by machining, forging, or fabrication.

Depending on the component, casting can integrate multiple design features into a single part, including:

  • Mounting bosses

  • Reinforcing ribs

  • Flanges

  • Internal cavities

  • Curved surfaces

  • Bearing housings

  • Connection points

  • Structural supports

  • Complex external profiles

This can reduce the number of separate components required in an assembly and, for suitable designs, reduce subsequent machining and fabrication operations.

However, not every component should automatically be manufactured by casting.

The appropriate process depends on factors such as:

Part geometry → Material → Weight → Production volume → Dimensional requirements → Machining → Application conditions

This is why we evaluate each OEM component individually before production.

Custom Cast Parts We Manufacture

Our custom casting service covers a wide range of mechanical and industrial components.

Machinery Cast Parts

Custom cast components for industrial machinery may include:

  • Machine bases

  • Brackets

  • Housings

  • Covers

  • Mounting supports

  • Gear housings

  • Structural components

  • Mechanical connectors

These components can be supplied as castings or combined with CNC machining where critical dimensions require additional processing.

For applications involving vibration damping, machinability, and compressive loading, see our Gray Iron Castings.

Agricultural Machinery Cast Parts

Agricultural equipment operates under vibration, impact, dust, moisture, and repeated mechanical loads.

Depending on the application, cast parts can include:

  • Machinery brackets

  • Housings

  • Mounting components

  • Support structures

  • Gear-related components

  • Mechanical connectors

  • Custom equipment parts

For agricultural equipment manufacturers and OEM buyers, we also provide a dedicated Agricultural Machinery Parts manufacturing solution.

For agricultural machinery projects, material and surface treatment should be selected according to the actual operating environment.

Motorcycle Cast Parts

Motorcycle components often require compact geometry combined with strength and dimensional consistency.

Custom cast parts can include:

  • Engine brackets

  • Mounting supports

  • Frame connectors

  • Housings

  • Control mounts

  • Structural components

  • Transmission-related components

For motorcycle manufacturers and aftermarket component suppliers, see our Motorcycle Castings page for more information about custom motorcycle components.

Automotive Cast Parts

Casting can be used for selected automotive components where the geometry and material requirements are suitable.

Potential applications include:

  • Brackets

  • Housings

  • Mounting components

  • Structural parts

  • Mechanical supports

  • Engine-related components

The final manufacturing process should be determined according to the component drawing and required mechanical performance.

Pump and Valve Cast Parts

Pumps and valves often contain complex flow paths, mounting structures, and sealing surfaces.

Depending on the design, cast components can include:

  • Valve bodies

  • Pump housings

  • Flanges

  • Mounting components

  • Fluid-handling components

  • Structural supports

Critical sealing and mounting surfaces can be CNC machined after casting.

Materials for Cast Parts

Material selection is one of the most important decisions in a casting project.

The lowest-cost material is not necessarily the most suitable option.

The material should be selected according to the component's:

  • Mechanical load

  • Impact conditions

  • Vibration

  • Wear

  • Corrosion exposure

  • Operating temperature

  • Machining requirements

  • Service life requirements

Depending on the component and manufacturing process, material options may include the following.

Gray Iron

Gray iron is widely used for machinery components because of its good machinability, vibration damping, compressive performance, and dimensional stability.

It can be considered for:

  • Machine bases

  • Housings

  • Covers

  • Brackets

  • Machinery components

For detailed material information and applications, see our Gray Iron Castings page.

Ductile Iron

Ductile iron provides higher tensile strength and toughness than conventional gray iron and can be considered for components exposed to higher mechanical loads or impact.

Typical applications include:

  • Structural components

  • Housings

  • Brackets

  • Machinery components

  • Automotive components

  • Agricultural machinery parts

For projects where higher strength and toughness are important, see our Ductile Iron Castings page.

Carbon Steel

Carbon steel castings can be considered for components requiring specific strength and toughness characteristics.

Material grade should be specified according to the customer's engineering requirements and applicable standard.

Stainless Steel

Stainless steel can be considered when corrosion resistance is an important requirement.

Typical applications may include:

  • Pumps

  • Valves

  • Marine equipment

  • Food-processing equipment

  • Chemical equipment

  • Industrial components

Customer-Specified Materials

If your project already specifies a material grade, please provide it with your drawing or technical specification.

Our engineering team can evaluate the manufacturing requirements according to the specified material.

Which Casting Process Is Suitable for Your Part?

Different casting processes have different strengths.

Choosing a casting method should depend on the actual part rather than simply selecting the process with the highest advertised precision.

Sand Casting

Sand casting is widely used for general industrial components and larger castings.

It can be suitable for:

  • Machine housings

  • Bases

  • Brackets

  • Large structural components

  • Industrial machinery parts

Lost Foam Casting

Lost foam casting can be considered for certain complex-shaped components where reducing parting lines and simplifying mold structures can be advantageous.

You can learn more about the process on our Lost Foam Castings page.

Investment Casting

Investment casting, also called lost wax casting, is suitable for selected components requiring detailed geometry and relatively fine features.

It can be considered for:

  • Small precision components

  • Complex mechanical parts

  • Valve components

  • Pump components

  • Detailed OEM castings

For more information, see our Investment Casting Castings page.

Cast Parts Manufacturing Process

A reliable casting is produced through controlled steps rather than a single casting operation.

1. Drawing and Technical Review

We review the customer's:

  • 2D drawings

  • 3D CAD files

  • Physical samples

  • Material requirements

  • Dimensional tolerances

  • Surface requirements

  • Production quantity

We also identify critical dimensions and features that may affect casting design or machining.

2. Manufacturing Process Evaluation

The appropriate manufacturing route is evaluated according to:

  • Part geometry

  • Material

  • Component size

  • Production quantity

  • Dimensional requirements

  • Machining requirements

  • Surface treatment

Depending on the component, this may involve sand casting, lost foam casting, investment casting, or another suitable production method.

3. Pattern and Tooling Development

For cast components requiring dedicated tooling, the pattern and mold system are developed according to the approved design.

Tooling design can consider:

  • Part geometry

  • Shrinkage

  • Machining allowance

  • Parting structure

  • Gating

  • Risers

  • Core requirements

4. Melting and Material Control

The selected metal is melted according to the required material specification.

For applicable projects, chemical composition can be monitored to help maintain material consistency between production batches.

5. Mold Filling and Solidification

Molten metal is introduced into the prepared mold.

The filling and solidification process can influence:

  • Internal soundness

  • Surface quality

  • Dimensional stability

  • Casting defects

Proper process control is therefore important for repeat production.

6. Shakeout and Cleaning

After solidification and cooling, the casting is removed from the mold.

Sand, gates, risers, and other unwanted material are removed.

7. Surface Cleaning

Depending on the product requirements, castings can undergo:

  • Shot blasting

  • Surface cleaning

  • Grinding

  • Painting

  • Powder coating

  • Anti-corrosion treatment

8. CNC Machining

Where required, critical surfaces can be machined after casting.

Available operations may include:

  • CNC milling

  • CNC turning

  • Drilling

  • Boring

  • Tapping

  • Reaming

  • Surface machining

Casting establishes the basic geometry, while CNC machining can establish critical assembly dimensions.

9. Final Inspection

Finished cast parts are inspected according to the customer's approved drawings and quality requirements.

Inspection may include:

  • Dimensional inspection

  • Visual inspection

  • Material verification

  • Chemical composition testing

  • Hardness testing

  • Machining inspection

  • Surface inspection

Inspection documentation can be provided according to project requirements.

Casting + CNC Machining for OEM Parts

Many OEM customers do not need a casting supplier alone.

They need a manufacturing partner capable of supplying a finished component ready for assembly.

For suitable projects, we can combine casting with CNC machining.

A typical workflow is:

Casting → Cleaning → Shot Blasting → CNC Machining → Dimensional Inspection → Finished Cast Part

This approach can be useful when a component contains both complex cast geometry and precision-machined functional surfaces.

Examples include:

  • Bearing seats

  • Mounting holes

  • Threaded holes

  • Bores

  • Sealing surfaces

  • Flat mounting surfaces

The machining allowance and critical surfaces should be defined during the engineering review.

Cast Parts for OEM Manufacturing

Our OEM service is designed for customers who already have a component design or existing part and need a manufacturing partner.

You can provide:

2D Drawing

A dimensioned engineering drawing helps define material, tolerances, surface requirements, and critical features.

3D CAD Model

A STEP, STP, IGES, or other compatible CAD file can help evaluate complex geometry.

Physical Sample

An existing component can be provided for technical evaluation when drawings are unavailable.

Material Specification

Provide the required material grade if it has already been determined by your engineering team.

Production Quantity

Estimated annual demand or order quantity helps us evaluate tooling and manufacturing requirements.

Application Information

If possible, tell us what the component does and what conditions it operates under.

This information allows the production route to be evaluated according to the actual component.

Quality Control for Custom Cast Parts

For OEM components, quality should be controlled throughout production rather than only at the end.

Material Inspection

Materials are checked against the specified material requirements.

Chemical Composition Testing

Applicable cast materials can be tested to verify chemical composition according to the required material specification.

Dimensional Inspection

Critical dimensions are checked against approved drawings.

Machining Inspection

Machined holes, bores, threads, mounting surfaces, and other functional features are inspected.

Surface Inspection

Casting surfaces are inspected according to agreed quality requirements.

Final Inspection

Finished products are checked before packaging and shipment.

Inspection reports and material documentation can be provided according to project requirements.

How to Reduce Casting Problems Before Production

One of the most useful parts of an OEM casting project is identifying potential problems before tooling is manufactured.

Several common issues can be reduced through early engineering review.

1. Excessively Thin Sections

Very thin areas may increase casting difficulty and create filling or solidification problems.

2. Sharp Internal Corners

Appropriate radii can help improve metal flow and reduce stress concentration.

3. Unnecessary Machining

Not every surface needs the same tolerance. Identifying critical dimensions can prevent unnecessary machining requirements.

4. Poorly Defined Tolerances

Applying extremely tight tolerances to every dimension can increase manufacturing cost without improving actual component performance.

5. Unclear Material Requirements

The material grade should be clearly specified before production.

6. Insufficient Application Information

Knowing how the component is loaded, mounted, or exposed to the environment can help determine whether the selected material and process are appropriate.

For this reason, drawing review before quotation can be valuable for complex OEM cast parts.

Industries We Serve

Our custom cast parts can be developed for a wide range of industries and equipment.

Industrial Machinery

Machine housings, brackets, supports, bases, and mechanical components.

For broader equipment component requirements, see our Industrial Parts page.

Agricultural Machinery

Equipment housings, brackets, supports, and mechanical components.

Our dedicated Agricultural Machinery Parts page provides more information for agricultural equipment applications.

Automotive

Selected structural, mounting, and mechanical components.

Motorcycle

Engine-related, frame, mounting, and mechanical components.

See our Motorcycle Castings page for motorcycle-specific applications.

Construction Equipment

Selected heavy-duty structural and mechanical castings.

Pumps and Valves

Housings, valve bodies, flanges, and fluid-handling components.

Power and Engineering Equipment

Custom components for machinery and engineering systems.

Custom Cast Parts Technical Information

The final specification of a cast part should be based on the customer's engineering drawing.

ItemCustomer Requirement
MaterialGray Iron / Ductile Iron / Steel / Stainless Steel / Specified Grade
Casting ProcessSand Casting / Lost Foam / Investment Casting / Suitable Process
Part WeightAccording to Drawing
DimensionsAccording to Approved Drawing
ToleranceAccording to Drawing / Agreed Standard
MachiningCNC Turning / Milling / Drilling / Boring / Tapping
Surface TreatmentShot Blasting / Painting / Coating / Customer Requirement
InspectionDimensional / Material / Surface / Mechanical Testing
PackagingExport Packaging / Customer Requirement

Important: Casting tolerances, surface finish, mechanical properties, and inspection requirements should be confirmed for each individual component rather than applying one specification to every cast part.

Why Choose Qingdao Zhaoyuqi Machinery Co., Ltd.?

Custom OEM Manufacturing

We manufacture according to customer drawings, CAD models, samples, and technical specifications.

Multiple Casting Options

Different casting processes can be considered according to part geometry, material, quantity, and required accuracy.

Casting + Machining

For suitable components, casting and CNC machining can be combined into one manufacturing workflow.

Engineering Review

We review component requirements before production to identify potential manufacturing issues.

Quality Inspection

Material, dimensional, machining, and surface inspections can be arranged according to project requirements.

International B2B Support

We work with overseas customers on technical communication, production coordination, inspection documentation, packaging, and shipment arrangements.

Frequently Asked Questions About Cast Parts

What are cast parts?

Cast parts are metal components produced by pouring molten metal into a mold and allowing it to solidify into the required geometry.

What materials can be used for cast parts?

Depending on the application and casting process, materials may include gray iron, ductile iron, carbon steel, stainless steel, alloy steel, and other customer-specified materials.

Can you manufacture custom cast parts according to drawings?

Yes. We manufacture custom OEM cast parts according to 2D drawings, 3D CAD files, samples, and technical specifications.

Can you manufacture cast parts from a physical sample?

Yes. A physical sample can be provided for technical evaluation. Reverse engineering requirements should be discussed before tooling and production.

Can cast parts be CNC machined?

Yes. CNC machining can be added for critical holes, threads, bores, mounting surfaces, sealing surfaces, and other functional dimensions.

Which casting process should I choose?

The appropriate process depends on the part's geometry, material, size, production quantity, dimensional requirements, and machining requirements. Our engineering team can evaluate the component before production.

Are cast parts suitable for mass production?

Yes. Casting can be suitable for repeat production when the component geometry, material, tooling, and production volume are appropriate.

Can you provide material certificates?

Material documentation and inspection reports can be provided according to customer and project requirements.

What information should I provide for a quotation?

A 2D drawing or 3D CAD file is preferred. Material requirements, quantity, machining requirements, surface treatment, and application information are also helpful.

What is the MOQ for custom cast parts?

MOQ depends on the component, tooling requirements, material, manufacturing process, and production volume. The requirement can be evaluated after reviewing the project information.

Request a Quote for Custom Cast Parts

Looking for a custom cast parts manufacturer for your next OEM project?

You do not need to determine the casting process before contacting us.

Send us your:

2D Drawing / 3D CAD File / Physical Sample / Material Requirement

Our team can evaluate:

Part Design → Material → Casting Process → Tooling → Machining → Inspection

For suitable projects, we can support the process from initial engineering review through casting, machining, quality inspection, packaging, and delivery.

Send Your Drawing for Evaluation

Request a Quote

Qingdao Zhaoyuqi Machinery Co., Ltd.

Custom OEM Cast Parts for Industrial and Mechanical Applications

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nico@zyqfoundry.com

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86-18561567088