Sand Casting Services | Custom Metal Parts

Custom Sand Casting Services for Complex Metal Parts

Sand casting services for custom metal parts, with support for machining, finishing, and production from prototypes to repeat orders.

Minhe Sand Casting Project Support

Minhe supports sand casting projects from early drawing review and process evaluation to casting production, subsequent machining, and final delivery. Backed by an ISO 9001 quality management system, we focus on stable execution across key production stages and practical support for custom metal parts with different structures, sizes, and application requirements.

Common Materials for Sand Casting

Material	Typical Characteristics	Common Applications
Gray Cast Iron	Good castability, vibration damping, and cost efficiency. Suitable for parts that require stable casting performance and good machinability for general industrial use.	Machine bases, housings, covers, brackets, and general equipment parts.
Ductile Iron	Higher strength and better toughness than gray iron, with good casting performance for structural parts requiring improved load capacity and impact resistance.	Pipe fittings, support parts, valve bodies, brackets, and structural castings.
Cast Steel	Good mechanical strength and impact resistance. Suitable for heavy-duty cast parts that require higher strength and reliable service performance in demanding industrial conditions.	Heavy-duty housings, support blocks, machinery components, and structural parts.
Stainless Steel	Better corrosion resistance than standard ferrous materials. Suitable for cast parts used in wet, chemical, or demanding service environments where durability and corrosion performance matter.	Valve bodies, pump components, fittings, and corrosion-resistant industrial parts.
Aluminum Alloys	Lower weight and good machinability, suitable for cast parts where lighter structure, dimensional flexibility, and secondary machining are important.	Lightweight housings, covers, equipment parts, and general industrial components.
Brass / Bronze	Good corrosion resistance, machinability, and dimensional stability. Suitable for cast parts used in fluid-handling systems and industrial applications requiring reliable finishing performance.	Valve parts, pump housings, fittings, bushings, and industrial cast components.

Advantages of Sand Casting

Sand casting is widely used for custom industrial parts because it supports flexible geometry, broad material options, and practical production costs. It is a suitable process for components that require larger sizes, more complex structures, and secondary machining or finishing after casting.

Suitable for medium- to large-sized parts
Compatible with ferrous and non-ferrous alloys
Economical for custom tooling and production
Supports secondary machining and surface finishing

Sand Casting Capabilities

We provide flexible sand casting services to meet your specifications — ideal for both low-volume prototypes and medium- to large-sized industrial components.

Specification	Details
Casting Weight Range	0.5 kg – 50 kg
Typical Alloys	ZL101, A356, ADC12
Annual Output	500,000+ castings
Dimensional Tolerance	±0.3 – ±0.5 mm
Tooling Lead Time	15–25 days (pattern & core box)
Molding Process	Green Sand / Resin Sand Molding

Typical Sand Cast Components

Sand Cast Gearbox Housing

Sand Cast Grid Plate

Sand Cast Heavy Block Housing

Sand Cast Machinery Housing

Sand Cast Mounting Base Plate

Sand Cast Rocker Arm Bracket

Typical Applications of Sand Casting

Sand casting is widely used for custom metal parts across a range of industrial sectors. It is especially suitable for medium- to large-sized components with complex geometry, practical machining allowances, and flexible material requirements.

Industrial Machinery

Used for housings, covers, bases, brackets, and other structural parts in general industrial equipment.

Pump & Valve Systems

Suitable for valve bodies, pump housings, fittings, and other flow-control components requiring machining and sealing surfaces.

Construction Equipment

Often used for heavy-duty support parts, housings, and structural castings in construction-related machinery and systems.

Agricultural Machinery

Applied to machine housings, mounting parts, protective covers, and other cast components used in agricultural equipment.

Energy Equipment

Suitable for cast parts used in power, utility, and related industrial systems where structural stability and durability are important.

Transportation & Heavy Equipment

Used for larger structural and functional cast parts in railway, utility, and other heavy-duty equipment applications.

What Is Sand Casting?

Sand casting is a metal casting process in which molten metal is poured into a sand mold to form the required part shape. It is widely used for producing custom components with complex geometry, larger sizes, and flexible material options, and is commonly applied to housings, valve bodies, bases, and other industrial metal parts.

Why Choose Our Sand Casting Services

Trusted by global manufacturers for delivering complex metal parts with precision, speed, and flexibility — from prototypes to full-scale production.

Complex Geometry & Tight Tolerance

We specialize in casting intricate shapes with precise dimensions, ensuring ±0.02mm accuracy and high repeatability — ideal for critical industrial parts. .

Flexible Alloy Selection

Choose from a broad range of ferrous and non-ferrous alloys, customized for strength, durability, and thermal performance in automotive, energy, and machinery. .

Fast Lead Time & Low-Volume Friendly

From rapid tooling to short-run production, we deliver functional prototypes in 7 days and small batch parts in 15–30 days. .

Full Process Control & Testing

From pattern design to final inspection, every step is monitored for consistency. NDT, pressure testing, and dimensional checks ensure reliability. .

Our Sand Casting Workflow

From pattern preparation to pouring, cleaning, and final inspection, our sand casting workflow supports reliable production for custom metal parts with different sizes and structural requirements.

1. Pattern and Mold Preparation

Patterns and sand molds are prepared according to part geometry, structural requirements, and casting feasibility.

2. Pouring and Solidification

Molten metal is poured into the prepared sand mold and allowed to solidify into the required part shape. .

3. Shakeout and Cleaning

After solidification, the casting is removed from the mold and cleaned to remove sand residue, gates, and excess material. .

4. Machining and Final Inspection

When required, the casting goes through secondary machining and final inspection to support dimensional accuracy and delivery consistency. .

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FAQ – Frequently Asked Questions

Sand casting is a traditional metal casting process in which molten metal is poured into a sand mold cavity. It is widely used for producing large, complex, or low-volume metal components.

Sand casting is compatible with a wide range of metals, including gray iron, ductile iron, carbon steel, aluminum alloys, and brass. The choice depends on the application and required properties.

Cost-effective for small to medium production runs
Handles large and complex shapes
Wide range of metal options
Short lead time for prototype or custom parts

Common sand casting methods include:

Green Sand Casting
Resin Sand Casting
Sodium Silicate Casting
Shell Mold Casting

Each has specific advantages depending on precision, surface finish, and production scale.

Yes. Sand castings are often machined to achieve tighter tolerances. Common surface treatments include:

Shot blasting or sand blasting
Anti-rust coating or painting
Galvanizing or heat treatment

Quality is ensured by:

Optimizing mold design and gating system
Controlling sand quality and compaction
Monitoring pouring temperature and speed
Applying visual and non-destructive testing (e.g. UT, X-ray)