Top 10 Aluminium Gravity Casting Factories and Suppliers in China 2026

Aluminium gravity casting factories in China continue to play a vital role in the global manufacturing supply chain, offering reliable production capabilities, competitive costs, and consistent quality for industries such as automotive, machinery, aerospace, and electronics. This guide is developed based on authoritative industry data and follows the EEAT principles of Experience, Expertise, Authoritativeness, and Trustworthiness to provide accurate and practical insights.

If you're looking for the best aluminium gravity casting supplier in China, this guide will help you compare leading manufacturers, evaluate their core capabilities, and understand the latest market trends shaping the industry in 2026. Whether you're sourcing standard castings or custom-engineered components, you'll find valuable information tailored to your needs.

• OEMs and product manufacturers seeking reliable casting partners
• Procurement managers looking to optimize supplier selection
• Engineers evaluating casting processes and manufacturing capabilities
• Importers and distributors sourcing high-quality aluminium castings

This guide reviews the top aluminium gravity casting factories in China, highlights their strengths, and explains the key factors to consider before choosing a supplier. Read on to discover the manufacturers best suited to your next casting project.

Why Choose Aluminium Gravity Casting in China?

When sourcing aluminium gravity casting components from Chinese suppliers, businesses can manage the process independently or collaborate with experienced local teams. China has become a preferred destination for aluminium gravity casting for several compelling reasons:

• Cost Efficiency with Stable Production Capacity
• Advanced Casting Technology and Equipment
• Comprehensive Engineering Support
• Quality Assurance and Certification Compliance
• Integrated Supply Chain Solutions
• Experience in Global Export Markets

List of the Top 10 Aluminium Gravity Casting Factories and Suppliers in China

1. Dolin Casting Co., Ltd.

Introduction:

As a factory-direct aluminum gravity casting manufacturer based in Zhejiang, Dolin Casting Co., Ltd. supplies wholesale-volume and custom-batch castings to buyers across the automotive, lighting, electrical, furniture, architectural, and medical sectors. Rather than outsourcing production steps, Dolin runs casting, CNC machining, surface finishing, and final inspection under one roof, which lets this supplier control lead times and unit pricing for bulk purchase orders. Overseas buyers working with Dolin typically benefit from a single point of contact across the entire supply chain, from raw aluminum ingot to finished, ready-to-assemble parts.

Established: 2000s (20+ years experience)

Headquarters: Zhejiang, China

Main Services:

• Gravity & Die Casting
• CNC Machining & Finishing
• Custom Industry Solutions
• One-Stop Manufacturing Service

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2. OEFORM Die Casting Co., Ltd.

Introduction:

OEFORM Die Casting Co., Ltd. sits on the multi-metal side of the supplier landscape, running production lines for aluminum, zinc, and magnesium die casting alongside its aluminium gravity casting capacity. What sets this Dongguan-based manufacturer apart for wholesale buyers is its in-house mold shop: tooling, casting, CNC machining, and surface finishing are handled internally, which shortens the path from drawing to first sample. OEFORM's client base spans automotive, aerospace, electronics, and medical OEMs, and the factory is built to switch between small customized runs and high-volume, repeat-order production without re-tooling delays.

Established: 2003

Headquarters: Dongguan, China

Main Services:

• Aluminum & Gravity Die Casting
• Zinc & Magnesium Die Casting
• Custom Mold Solutions
• CNC Machining & Finishing
• Multi-Industry Applications

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3. Zhejiang Dongrun Casting Industry Co., Ltd.

Introduction:

Founded in 1995, Zhejiang Dongrun Casting Industry Co., Ltd. is one of the more established gravity casting mills in Yongkang, a manufacturing cluster long known for metal hardware production. Dongrun's own mold development team designs and builds tooling in-house before moving parts through gravity die casting, sand casting, CNC machining, and finishing — a setup that suits distributors and importers who need a wholesale supplier capable of holding tight tolerances across repeat production batches. The factory currently ships components into the automotive, transportation, energy, lighting, architecture, and medical equipment industries.

Established: 1995

Headquarters: Yongkang City, Zhejiang Province, China

Main Services:

• Gravity & Sand Casting
• Custom Mold Development
• CNC Machining & Finishing
• Multi-Industry Aluminum Parts
• Prototyping & Quality Inspection

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4. GC Precision Mold Co., Ltd. (Aludiecasting)

Introduction:

GC Precision Mold Co., Ltd., trading online as Aludiecasting, built its business around mold-making before expanding into full-scale aluminum gravity casting and multi-material die casting — a background that still shows in how this Dongguan supplier prices and plans tooling for wholesale clients. Mold design, casting, CNC machining, surface finishing, and assembly are all managed under one production umbrella, which keeps quality control consistent as orders scale up. Buyers in the automotive, LED lighting, marine, architectural, and industrial equipment sectors typically source from Aludiecasting for production-ready parts that need to move quickly from prototype to bulk manufacturing.

Established: 1999

Headquarters: Dongguan City, Guangdong Province, China

Main Services:

• Aluminum & Gravity Die Casting
• Zinc, Magnesium & Copper Casting
• Custom Mold Manufacturing
• CNC Machining & Surface Finishing
• Multi-Industry Components

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5. Ningbo SAIVS Machinery Co., Ltd.

Introduction:

Ningbo SAIVS Machinery Co., Ltd. has been operating since 1989, giving this metal parts wholesaler and manufacturer one of the longer track records on this list. SAIVS doesn't limit itself to a single casting method — gravity casting, die casting, investment casting, and forging all run alongside CNC machining and heat treatment inside its Yinzhou facility, which gives procurement teams flexibility when a project calls for more than one process. The company mainly supplies automotive, marine, lighting, agriculture, and construction machinery buyers looking for a stable, quality-controlled source for export-grade metal components.

Established: 1989

Headquarters: Yinzhou, Ningbo, Zhejiang Province, China

Main Services:

• Aluminum Gravity Casting
• Aluminum & Zinc Die Casting
• Investment Casting
• Forging
• Precision CNC Machining

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6. Qingdao Longquan Hongda Copper & Aluminum Casting Co., Ltd.

Introduction:

Longquan Hongda has been supplying aluminum and copper castings out of Jiaozhou, Qingdao since 1978, making it one of the longest-running foundries on this list and a familiar name among machinery and industrial wholesale buyers in the region. The factory keeps its own tooling shop on-site and covers sand casting, gravity casting, die casting, mold design, and CNC machining without routing work to third-party subcontractors — a setup that helps keep quotes and lead times predictable for bulk purchase orders. Its export track record and standardized quality management systems have made it a go-to supplier for automotive and machinery buyers sourcing custom aluminum and copper parts.

Established: 1978

Headquarters: Jiaozhou, Qingdao, Shandong Province, China

Main Services:

• Aluminum Die & Gravity Casting
• Aluminum Sand Casting
• Copper Casting
• Mold Design & Manufacturing
• Precision CNC Machining

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7. NINGBO INNOVAW MECHANICAL CO., LTD

Introduction:

With more than two decades in operation, NINGBO INNOVAW MECHANICAL CO., LTD has grown into a multi-process casting supplier serving a wide spread of downstream industries — automotive, aerospace, medical, energy, marine, lighting, and general industrial manufacturing. Casting, mold design, CNC machining, and surface finishing are consolidated into one production chain at its Ningbo facility, an arrangement that international quality certifications back up and that OEM and wholesale buyers rely on when qualifying a new supplier. Innovaw positions itself less as a single-process shop and more as a manufacturing partner able to switch between high- and low-pressure die casting, gravity casting, investment casting, and sand casting depending on the part.

Established: 1998

Headquarters: Ningbo, Zhejiang Province, China

Main Services:

• High & Low Pressure Die Casting
• Aluminum Gravity Casting
• Investment & Sand Casting
• Precision CNC Machining
• Tooling & Surface Finishing

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8. Foshan ZP Aluminum Co., Ltd.

Introduction:

Foshan ZP Aluminum Co., Ltd. covers more ground than a typical single-process foundry, running extrusion, casting, CNC machining, and metal fabrication lines under one supplier network in the Foshan aluminum manufacturing belt. That breadth is useful for wholesale buyers and distributors who want to consolidate purchase orders — profiles, cast components, and machined parts can all be sourced from the same factory instead of juggling separate vendors. ZP Aluminum's OEM/ODM program and flexible surface treatment options are aimed squarely at construction, automotive, electronics, lighting, and furniture buyers placing recurring bulk orders.

Established: 2005

Headquarters: Foshan, Guangdong, China

Main Services:

• Aluminum Extrusion & Profiles
• Die & Sand Casting
• Precision CNC & Fabrication
• Surface Treatment Solutions
• OEM/ODM & Mold Customization

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9. Inox Cast

Introduction:

Inox Cast operates under the SunOn Industrial Group umbrella, which gives this Dongguan die casting manufacturer more group-level purchasing power on raw materials than a typical standalone foundry — a factor that often shows up in per-unit pricing for bulk wholesale orders. Production covers aluminum, zinc, magnesium, and copper, with mold design, gravity and high-pressure die casting, CNC machining, surface treatment, and assembly handled internally. The supplier's main customer base sits in automotive, medical, electronics, lighting, household appliance, and power tool manufacturing, industries where certified quality management and advanced inspection systems matter for long-term supply agreements.

Established: 1997

Headquarters: Dongguan City, China

Main Services:

• Gravity & High-Pressure Die Casting
• In-House Mold Design & Tooling
• Precision CNC Machining
• Surface Treatment Solutions
• Prototyping & Engineering Support

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10. Anebon Aluminium Gravity Casting Factory

Introduction:

Anebon rounds out this list as a newer but fast-scaling manufacturer, founded in 2010 and based in Dongguan's dense casting and machining supply cluster. The factory's core offering — custom gravity die casting paired with CNC machining, sheet metal fabrication, and rapid prototyping — is built around OEM clients who need a supplier flexible enough to move from a single prototype run straight into wholesale production volumes without switching vendors. Automotive, aerospace, electronics, and general industrial buyers make up the bulk of Anebon's client base, drawn in by its full-process engineering support and relatively short prototype-to-production turnaround.

Established: 2010

Headquarters: Dongguan City, Guangdong, China

Main Services:

• Custom Aluminum Gravity Casting
• Precision CNC Machining
• Sheet Metal Fabrication
• Rapid Prototyping Services
• OEM Industrial Solutions

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Why Are Aluminium Gravity Casting Factories and Suppliers in China Widely Chosen?

China has become a major global sourcing destination for aluminium gravity casting products. Many international buyers turn to Chinese gravity casting factories and suppliers due to their balanced combination of manufacturing experience, cost efficiency, and flexible production capabilities. The following factors explain why China remains competitive in this field.

1. Mature Manufacturing Experience

Aluminium gravity casting has been widely used in China for decades, particularly in traditional industries such as machinery, pumps, valves, lighting, and automotive components. Many factories have accumulated long-term practical experience in mold design, alloy control, and casting process optimization, which helps ensure stable quality and repeatability.

2. Reasonable Cost Structure

Compared with high-pressure die casting, gravity casting typically requires lower equipment investment and simpler tooling. Chinese suppliers benefit from localized aluminum material sourcing, well-developed subcontracting networks, and efficient labor allocation, allowing them to offer competitive prices without sacrificing basic quality standards.

3. Flexibility for Medium and Low Volume Orders

Aluminium gravity casting is well suited for small to medium batch production and parts with thicker walls or more complex internal structures. Many Chinese factories are flexible in order quantity, making them attractive to overseas customers who require prototypes, trial orders, or customized components with relatively low annual volumes.

4. Broad Range of Applications

Chinese aluminium gravity casting suppliers serve various industries, including industrial equipment, automotive spare parts, agricultural machinery, electrical housings, and construction hardware. This wide application base enables factories to adapt processes to different functional and mechanical requirements.

Development Outlook for Aluminium Gravity Casting in China

Although high-pressure die casting continues to grow rapidly, aluminium gravity casting remains an important manufacturing method in China. It is especially relevant for components that require good mechanical strength, thicker sections, or lower internal stress.

With ongoing industrial upgrades and increasing demand for reliable metal components, gravity casting factories in China are gradually improving quality control, alloy consistency, and post-processing capabilities. While competition is strong, experienced suppliers with stable quality and export know-how are expected to maintain steady business.

What Is the Typical Cost of Aluminium Gravity Casting Parts in China?

The cost of aluminium gravity casting parts in China varies depending on design complexity, alloy type, mold structure, and finishing requirements. In general, gravity casting offers a cost-effective solution for parts that are not suitable for high-pressure die casting.

1. Aluminum Alloy Selection

Common alloys such as A356 or AlSi7Mg are frequently used for gravity casting due to their good strength and casting performance. Higher-performance alloys or strict chemical composition control may increase material costs moderately.

2. Mold Type and Tooling Cost

Gravity casting molds are usually simpler and less expensive than high-pressure die casting molds. Tooling costs depend on part size, cavity number, and mold material, and are often suitable for medium-volume production projects.

3. Machining and Post-Processing

Many gravity cast parts require CNC machining to achieve precise dimensions. Additional treatments such as heat treatment, polishing, shot blasting, or painting will affect the final price.

4. Order Quantity

Unit costs decrease as order volume increases. For small batches, tooling and setup costs account for a larger proportion, while stable repeat orders help reduce average pricing over time.

For accurate quotations, buyers are advised to provide detailed drawings, tolerance requirements, and estimated annual quantities.

FAQs about Aluminium Gravity Casting Factories and Suppliers in China

What are the advantages of gravity casting?

Gravity casting produces parts with good mechanical strength and relatively low porosity, supports thicker wall sections, and requires simpler, lower-cost tooling than high-pressure die casting. It is well suited to small and medium production volumes and to parts with more complex internal structures.

What are the disadvantages of gravity casting?

Cycle times are slower than high-pressure die casting, so it is less efficient for very high-volume orders. Some parts also require additional CNC machining to reach tight dimensional tolerances, which adds cost and lead time.

What is the difference between die casting and gravity casting?

High-pressure die casting injects molten metal into the mold under high pressure, giving fast cycle times and thin-wall capability. Gravity casting fills the mold using gravity alone, which is slower but generally produces parts with better mechanical properties and lower tooling investment.

What is the difference between LPDC and gravity casting?

Low-pressure die casting (LPDC) uses controlled air pressure from below to push molten metal into the mold, giving more consistent filling and fewer defects. Traditional gravity casting relies on gravity alone, which is simpler and cheaper but can be less consistent for complex or thin-walled parts.

What is the difference between PDC and GDC?

PDC (pressure die casting) forces molten metal into the mold under high pressure for fast, high-volume production. GDC (gravity die casting) fills the mold by gravity only, making it better suited to parts that need higher strength and lower tooling cost rather than maximum output speed.

What are common defects in gravity casting?

Typical defects include porosity, shrinkage cavities, cold shuts, oxide or sand inclusions, and misruns. Most of these are controlled through mold design, alloy composition control, and proper pouring technique.

What is the future of gravity casting?

While high-pressure die casting continues to expand, gravity casting remains important for components that need higher strength, thicker sections, or lower internal stress. Chinese factories are steadily improving quality control, alloy consistency, and post-processing to stay competitive as demand for reliable metal components grows.

Conclusion

China is home to some of the world's leading aluminium gravity casting factories and suppliers, offering high-precision components for industries ranging from automotive and aerospace to electronics and industrial machinery. These top manufacturers provide a variety of casting services including gravity die casting, high-pressure and low-pressure die casting, CNC machining, and custom finishing solutions, ensuring products meet strict quality, tolerance, and performance standards. Many of these companies also offer one-stop solutions, from mold design and prototyping to final assembly and global shipping, making them reliable partners for OEM clients worldwide.

Among these top suppliers, Innovaw stands out as a professional aluminium gravity casting factory in China, combining advanced casting technologies with CNC machining, sheet metal fabrication, and rapid prototyping. With decades of experience and a strong focus on customized solutions, Innovaw delivers durable, lightweight, and precision-engineered aluminium components that cater to a wide range of industrial applications. Their vertically integrated operations, skilled technical team, and commitment to quality make Innovaw a trusted choice for companies seeking reliable and scalable aluminium casting solutions in China.

By highlighting these leading factories, it becomes clear how China continues to dominate the aluminium gravity casting industry, providing innovative, cost-effective, and high-quality solutions. Innovaw exemplifies this excellence, offering clients both technical expertise and flexible manufacturing capabilities to achieve optimal performance and customized results.

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