One-Stop OEM/ODM Grey Iron Casting Parts manufacturers
High-Quality Grey Iron Casting Parts
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Our Grey Iron Casting Parts Are Engineered to Meet the Demanding Requirements of Applications Worldwide. to discuss your project requirements. Get in touch to discuss your project
OEM Gray Iron Casting Auto Accessories Vehicle Components Customized Tractor/Auto/Automobile/Automotive Part
Gray Iron Casting Parts Pump Housing Parts
High-Quality Sand Processed Gray Iron Casting Parts for Drive Bodies
Gray Cast Iron Parts Automobile Engine Rocker Arm
Gray cast iron castings for casting automotive parts/accessories
Gray cast iron bearing cap
I don't have complete drawings, can I send inquiry?
Yes, we can help you analyze based on your description, samples and photos.
I am not sure if you can do my parts?
Most of our customers come to us because “others say they can’t do it”.
Are you a factory or a trader?
We are a factory and have a project management team that can handle the technology, cost and delivery at the same time.
Our Expertise of Grey Iron Casting Parts
We specialize in producing grey iron castings (HT150–HT300 / GG15–GG30) for industrial applications that require excellent vibration damping, dimensional stability, and cost-efficient manufacturing. Our process supports both thin-wall and complex-cavity designs while maintaining stable mechanical and metallurgical properties across production batches.
Leveraging resin sand casting, green sand casting, and solidification simulation, we engineer gating and riser systems to minimize porosity, shrinkage defects, and graphite distribution imbalance. Typical applications include machine bases, housings, pump bodies, brackets, compressor components, transmission structures, and agricultural machinery parts where compressive strength and damping performance are crucial.
We support part sizes ranging from 0.1 to 24 inches and weights from 1 ounce to 50 pounds, ensuring consistent graphite morphology, hardness uniformity, and dimensional repeatability required for precision assembly and stable mechanical performance.
Our Manufacturing Approach
To achieve stable and verifiable grey iron casting quality, our workflow focuses on graphite morphology control, base-metal matrix stability, process-parameter traceability, and digital casting simulation, rather than relying on traditional experience-only operations.
Charge Material Control & Melt Treatment
We conduct spectral analysis for charge material and adjust C, Si, Mn, S, and P levels to achieve the required graphite grade and target base-metal microstructure (ferrite/pearlite ratio). Inoculation, nodulizing prevention, and slag removal disciplines are applied to avoid undercooling, carbide formation, and structure brittleness.
Mold System & Feeding Engineering
Casting layout is designed using flow & solidification simulation, optimizing gating, risers, chills, and venting to reduce shrinkage, porosity, and edge hardness deviation.
Microstructure & Mechanical Property Control
We verify and tune graphite morphology (flake size & distribution per ISO 945) and matrix proportions to reach the required compressive strength, wear resistance, and damping performance. Heat treatment is optional and used only for stress relief when assembly tolerance or vibration sensitivity is critical — not for alloy hardening.
Precision Machining & Quality Assurance
Machining is completed using CNC finishing, supported by CMM dimensional verification. The surface finish typically reaches a Ra of 3.2–6.3 μm, depending on the casting and machining stages. Inspection options include UT, MT, hardness testing, metallography, and run-out verification, as specified in the drawing requirements.
What are the Advantages of Grey Iron Casting Parts ?
If your design requires evaluation, we can provide graphite grade recommendations, base microstructure control guidance, and casting simulation to reduce risks before tooling launch.
Secondary Operations and Treatment of Grey Iron Casting Parts We Offer
How to Work With us
Provide 3d drawings
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Manufacturing
Order delivery
Get 3-day standard lead times on simple parts between 10 mm x 10 mm and 200 mm x 200 mm. Upload your part to see if it’s eligible.
Frequently asked questions
Drawing evaluation: 1-2 business days
Prototype production: 5-10 business days
Small-batch production: 10-15 business days
Large-scale production: 15-30 business days
Rush service: 72-hour rush service available (additional fees apply)
We have established a comprehensive quality management system:
ISO 9001:2015 Certification: International quality management standard
First Article Inspection: 100% confirmation of the first piece before mass production
Process Control: 100% inspection of critical processes
Finished Product Inspection: Full dimensional inspection using CMM coordinate measuring
Quality Traceability: Complete production and inspection records
We support both small-batch prototyping and large-scale production. MOQ starts from as low as a few dozen pieces, and high-volume orders up to hundreds of thousands are welcome.
Yes. Besides producing according to drawings, we provide DFM (Design for Manufacturability) support to reduce costs and improve efficiency.
Pricing is based on material, process complexity, order volume, and delivery requirements. We aim to offer the most cost-effective solution for every project.
We serve automotive, machinery, electronics, medical devices, and energy sectors. From precision parts to structural components, we have extensive expertise.