Koboer Foundry

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about us

Who we are

Founded in 2003, Keboer Casting is a specialized, ISO 9001:2015 certified foundry manufacturing high-quality gray iron and ductile iron castings.

We provide integrated solutions—from initial design to finished machined components—for global industrial leaders across key markets including Machine Tools, Pumps & Valves, Power Transmission, and Heavy Equipment.

With a legacy rooted in the precision demands of the machine tool industry, we combine decades of metallurgical expertise with state-of-the-art manufacturing facilities to deliver components that meet the most stringent quality and performance standards.

As a premier ductile iron casting manufacturer and a trusted China iron foundry, we are committed to being your most reliable partner in the casting supply chain.

30,000

Annual Production Capacity

Years of Casting Mastery

Engineering & Technical Experts

91,000

State-of-the-Art Facility

Our History

Our Journey of Growth & Expertise

2003

Founded as a key casting supplier for the Suzhou Keboer Machine Tool Group, establishing our deep expertise in high-tolerance castings for precision machinery.

2019

Embarked on a new chapter with a significant investment in our state-of-the-art iron casting factory in China, located in Ningguo, Anhui. This facility was purpose-built for high-capacity, high-efficiency production to serve our growing global clientele.

2021

Phase I of the Anhui Ningguo Kebor facility is now complete, equipped with 3 resin sand molding lines, 50 shell sand molding units, and 60 machining sets, providing comprehensive services for mechanical components.

2025

The construction of the Phase III main office building and workshops has been commenced. Upon completion, the facility will feature a new office building and laboratory, along with two modern machining workshops.

Factory, Production & Quality Control

Precision in Every Pour: AdvancedCasting & In-House Machining

Our Capabilities

Our modern Ningguo facility is the heart of our operations, equipped with advanced production lines and a comprehensive quality assurance laboratory.

We have made substantial investments in technology to provide a true one-stop solution, managing your project from raw material to a fully machined, ready-to-assemble component.

This integrated approach, which includes extensive CNC machining for castings, streamlines your supply chain, reduces lead times, and ensures accountability for quality at every stage.

Capabilities

Mastering the Craft : Our Dual Casting Processes

Request Casting Process Solution

Resin Sand Process

Coated Sand Process

Resin Sand Process

For Large-Scale & Heavy-Duty Castings

Our Resin Sand process is ideal for producing large, heavy, and structurally demanding castings. Using robust metal or wood patterns, High-strength sand shell, with a smaller draft angle,24 to 72 hours of insulation time.this process provides a cost-effective solution for low-to-medium volume production runs where structural integrity is paramount.

Key Specifications Table

Casting Weight: 50 kg – 10,000 kg

Best For: Low-to-medium volume (tens to hundreds annually)

Materials: Gray Iron (HT200,HT250,HT300,).Ductile Iron (QT400-QT450-QT500-QT600)

Applications: Machine Tool Bases, Large Housings, Construction Machinery Frames

Coated Sand Process

For High-Precision & High-Volume Components

When precision and surface finish are critical, our Coated Sand process delivers exceptional results. Using high-precision, long-life iron molds (100,000+ uses), By using the core shooter, we can produce more precise sand molds with a smaller draft angle.we achieve accuracy errors within 0.5mm, the surface roughness reaches Ra25.making it perfect for complex parts in high-volume production.

Key Specifications Table

Casting Weight: 5 kg – 1,000 kg

Best For: Hundreds to tens of thousands

Materials: Gray Iron (HT200,HT250,HT300,).Ductile Iron (QT400-QT450-QT500-QT600)

Applications: Valve, Cylinder block, Transmission parts

Challenges

Our Quality Control

Our quality philosophy is built on proactive prevention and rigorous verification. Our dedicated quality control process ensures that your components are flawless, from their internal structure to their final dimensions.

Raw Material Verification

Quality begins with certified raw materials. Every batch of pig iron, scrap steel, and alloys is verified by our in-house spectrometer before it is accepted into our inventory, ensuring the correct chemical composition from the very start.

In-Process Control

We continuously monitor key process parameters, including sand properties and melt chemistry, to ensure consistency from the first casting to the last.

Non-Destructive Testing (NDT)

To guarantee internal soundness, we utilize a suite of NDT methods, including X-ray, Ultrasonic Testing (UT), and Magnetic Particle Inspection, to detect any subsurface imperfections

Raw Material Verification

Final inspection is performed using state-of-the-art Coordinate Measuring Machines (CMM). For complex geometries, we provide iron castings with 3D scanning inspection to generate comprehensive reports, ensuring every dimension conforms precisely to your engineering drawings.