Gray cast iron, ductile cast iron, white cast iron – one-stop solution

Professional cast iron manufacturer

Fast Prototype, Quality Manufacturing

13 years of experience in cast iron parts manufacturing and processing

As a professional foundry, we supply a full range of cast iron components tailored to different performance requirements and industrial applications. Cast iron is valued for its excellent castability, cost efficiency, dimensional stability, and wide mechanical property range. By controlling chemical composition, melting process, inoculation, and heat treatment, we are able to produce gray iron, ductile iron, and white cast iron with consistent structure and reliable performance.

Gray cast iron is characterized by its flake graphite structure, offering excellent vibration damping, good thermal conductivity, and high compressive strength. It is easy to machine and highly economical, making it ideal for machine tool beds, pump housings, valve bodies, engine blocks, and other components where stability and vibration absorption are critical.

Ductile iron, also known as nodular cast iron, features spheroidal graphite that significantly improves tensile strength, ductility, and impact resistance. It can partially replace cast steel in many structural applications while maintaining better castability and lower cost. Ductile iron is widely used in automotive parts, gear housings, pipes and fittings, agricultural machinery, and heavy-duty structural components requiring strength and toughness.

White cast iron contains little to no free graphite and forms a hard carbide structure, resulting in extremely high hardness and outstanding wear resistance. Although it has low ductility and is difficult to machine, it performs exceptionally well in abrasive environments. It is commonly applied in crusher liners, mill liners, slurry pump parts, coal mill components, and other heavy wear parts in mining, cement, and power generation industries.

Through strict quality control, including chemical analysis, mechanical testing, hardness inspection, and microstructure examination, we ensure each type of cast iron meets international standards and customer specifications for demanding industrial use.

White cast iron​-mulan manufacturing group
We are ISO 9001:2015 certified and hold numerous industry-specific certifications. We offer a wide range of casting services, from high-precision prototyping to high-volume production. Our goal is: reliable delivery, flawless execution, and building long-term trust.

We can provide customized casting solutions for cast iron parts

Contract Manufacturing

Custom ductile iron parts
  • Steering Knuckle
  • Crankshaft
  • Differential Housing
  • Ductile Iron Pipe
  • Flange
  • Gear
  • Gearbox Housing
  • Axle Housing
  • Connecting Rod

and more

Load-bearing and impact-resistant structural components

Custom gray cast iron parts
  • Machine Tool Bed
  • Machine Table
  • Pump Housing
  • Pump Cover
  • Valve Body
  • Engine Block
  • Flywheel Housing
  • Bearing Housing
  • Gearbox Housing
  • Pulley

and more

Structural stability and vibration damping components

Custom white cast iron parts
  • Jaw Plate
  • Crusher Hammer
  • Impact Plate
  • Crusher Liner
  • Mill Liner
  • Coal Mill Liner
  • Impeller
  • Wear Plate
  • Slurry Pump Casing
  • Chute Liner

and more

High wear-resistant and erosion-resistant parts

International Cast Iron Grade Comparison Table

Cast iron grades
Cast iron grades
We manufacture cast iron components in accordance with ASTM, EN, ISO standards. Equivalent grades are available upon request

OEM sample display

Produced exactly according to your requirements

OEM sample display-mulan manufacturing group

Custom cast iron pipe fittings

OEM sample display-mulan manufacturing group

Custom-made cast iron pumps and valves

OEM sample display-mulan manufacturing group

Custom machine tool bed cast iron parts

OEM sample display-mulan manufacturing group

Custom cast iron valve cover

OEM sample display-mulan manufacturing group

Custom non-standard cast iron parts

Custom engine cast iron parts

Custom cast iron impeller parts

OEM sample display​-mulan manufacturing group

Custom wear-resistant cast iron parts

Our casting capabilities

We specialize in the production and machining of cast iron parts [Weight range: 0.5 kg to 80 tons], with 13 years of experience in casting and machining. Our factory provides stable melting point control, alloy composition certification, and rigorous hardness and microstructure testing to ensure high wear resistance and consistency. Equipped with advanced precision machining technology, we provide reliable OEM solutions for the mining, agricultural machinery, wind power, and heavy industry sectors.

Design Capability

With strong engineering support, we provide DFM analysis, 3D modeling, casting simulation, and material selection optimization. Our team helps improve structure, reduce weight, and enhance wear resistance while controlling production cost and ensuring manufacturability.

Customization Capability

We offer full OEM/ODM customization based on drawings or samples, including alloy adjustment, hardness control, heat treatment, and surface finishing. Flexible production planning allows small batches and large-scale orders with stable quality.

CNC Machining & Assembly

Equipped with advanced CNC machining centers, we ensure tight tolerances and consistent dimensional accuracy. We provide drilling, milling, tapping, surface treatment, and sub-assembly services to deliver ready-to-install components.

Our casting capabilities-mulan manufacturing group
Our casting capabilities-mulan manufacturing group
Our casting capabilities-mulan manufacturing group
Our casting capabilities-mulan manufacturing group
Our casting capabilities-mulan manufacturing group
Our casting capabilities-mulan manufacturing group

Quality assurance

Raw Materials & Chemical Composition

We use high-quality pig iron and selected steel scrap to ensure stable carbon equivalent. Each melt is tested by spectrometer to control C, Si, Mn, and other elements, meeting ASTM and EN standards with full traceability reports.

Mechanical Testing Requirements

Gray Cast Iron
Tensile strength and Brinell hardness tested per ASTM A48 / EN 1561 standards.

Ductile Iron
Tensile, yield strength and elongation verified per ASTM A536 / EN 1563.

White Cast Iron
Hardness and wear resistance tested per ASTM A532 high-chrome standards.

Microstructure Inspection

Gray Cast Iron
Graphite flake type and pearlite structure per EN 945 verified.

Ductile Iron
Nodularity grade and ferrite/pearlite ratio per ISO 945 checked.

White Cast Iron
Carbide distribution and matrix structure per ASTM A532 controlled.

Dimensional & Visual Inspection

Dimensions verified by caliper and CMM per tolerance standards.

Surface inspected for porosity, shrinkage, cracks, and defects.

Non-Destructive Testing (NDT)

MT, UT, PT, and RT performed per ASTM and EN standards upon request.

Hardness Testing

Brinell (HB) and Rockwell (HRC) tested, including surface and core comparison.

Inspection Reports

Complete chemical, mechanical, microstructure, and dimensional test reports provided for traceability.

We implement strict quality control from raw material analysis to final inspection. All cast iron components are tested for chemical composition, mechanical properties, hardness, microstructure, and dimensional accuracy. Third-party inspection and EN 10204 3.1 certification are available upon request.

Goods delivery guarantee

Comprehensive protection for custom wear-resistant castings

On-Time Delivery
With 13 years of production management experience, we implement strict scheduling and capacity planning to ensure stable lead times. From raw material preparation to casting, machining, and inspection, each stage is controlled under a standardized workflow. Real-time production tracking and dedicated project coordination help us respond quickly to changes and deliver orders on schedule.

Reliable Packaging
We use export-standard packaging solutions tailored to product size and weight, including fumigated wooden crates, steel pallets, rust-proof coating, VCI protection, and customized inner supports. Each package is reinforced to prevent movement, corrosion, or impact damage during long-distance transportation, ensuring parts arrive in perfect condition.

Logistics Reliability
We cooperate with experienced freight forwarders and offer flexible shipping options by sea, air, or rail. Clear export documentation, accurate labeling, and cargo tracking ensure smooth customs clearance and timely arrival. Our logistics team monitors every shipment and provides updates to guarantee dependable global delivery.

Stable-delivery

Regarding cooperation with Mulan Metal in metal parts casting business

Delivery time for standard castings is 3-4 weeks.Delivery time for precision castings is 4-8 weeks.

What is the minimum order quantity (MOQ)? Can you support a small trial order?

We are a Chinese original manufacturer, Our standard MOQ is 500 pieces, but we can provide a trial order of 50-100 pieces for new customers for quality verification.

Without the authorization of the customer, we will never do this, so we support the signing of NDA agreement to ensure your interests.

Of course, we have nearly 12 years of experience in supplying mechanical castings to European and American customers, so we have (CE, MTC certification, EN 1090) and are familiar with RoHS/REACH standards.

We have a strict quality control process involving multiple inspections and tests throughout the manufacturing process. We use advanced inspection and testing equipment to ensure that all casting products meet or exceed industry standards and support pre-shipment inspections.

How to share mold costs?

The mold fee can be paid separately (ownership belongs to the customer) or allocated to the unit price of the first batch of orders. Of course, other methods can also be negotiated. We comply with the wishes of the customer.

All raw materials come with MTC (material report), and of course we also support third-party testing (SGS/BV). Don’t worry about this, because we are engaged in cross-border trade business, and the certificates and qualifications are complete.

EXW、FOB、CFR、CIF、FCA、DDU、DDP

Mold Design: 2–5 days
Tooling: 8–10 days
Samples: 3–5 days
Mass Production: 4–8 weeks, Special customized products may require a few days earlier or later depending on the quantity and processing complexity.

You can contact us by email, phone or the form below. Of course, it is recommended that you provide us with complete cooperation information, such as casting prototype drawings, process requirements, material requirements, application scenarios, tolerance requirements, quantity and more, so that we can quickly provide you with a specific quotation and solution within 12 hours.

Contact US

We will be happy to help you with your casting, extrusion and forming work on a wide range of metals.

Head Quarter:Building 37, 2049 Pujin Road, Shanghai
E-mail:mulanmetal@mulan-mfg.com
Business Talk:+86-21-3479-1662

  • Original Manufacturer
  • 12+ years of custom casting manufacturing
  • ISO 9001:2015 quality standard certified
  • Free 2D/3D Design Drawing

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