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Cast Iron

Durable and high-strength steel castings for demanding applications. Suitable for construction, mining, and heavy industrial components. ISO 9001 certified, ±0.05mm tolerance, heat-treated if required.

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Why Choose Our Cast Iron Services

Over 20 years of experience in producing durable and precision cast iron components — trusted by industries worldwide.

High Strength & Wear Resistance

Our cast iron parts are designed for load-bearing, vibration-damping, and wear-resistant applications — ideal for construction and heavy machinery. .

Material Flexibility

We offer both gray iron and ductile iron grades (HT200, QT450, QT500) to meet varied mechanical and performance needs. .

Short Lead Times

Standard lead times from 15 to 30 days. We support small batch prototyping and fast production turnaround. .

Strict Quality Assurance

All parts undergo dimensional checks, NDT (UT/RT/MT), and material testing to ensure structural integrity and consistency. .

Our Cast Iron Casting Process

From mold design to final inspection, our cast iron process ensures durability, dimensional accuracy, and cost-efficiency across all applications.

1. Mold Engineering

Custom sand or resin molds are designed using CAD and simulation tools to optimize solidification and reduce internal defects in iron castings. .

2. Iron Melting & Pouring

We melt gray or ductile iron in cupola or induction furnaces and pour into preheated molds — ensuring metallurgical stability and clean castings. .

3. Cooling & Cleaning

After controlled cooling, castings undergo shakeout, sand removal, and rough cleaning to prepare for further processing. .

4. Inspection & Finishing

Each part is inspected for dimensional accuracy and defects. Optional machining or surface treatment is applied based on final use. .

Our Iron Casting Capabilities

We provide custom iron casting services to support a wide range of industrial needs — from durable gray iron to high-strength ductile iron components.

Specification Details
Casting Weight Range 0.5 kg – 800 kg
Typical Materials Gray Iron (HT200), Ductile Iron (QT450, QT500)
Annual Capacity 150,000+ parts
Machining Tolerance ±0.2 mm (after stress relief or annealing)
Tooling Lead Time 15–30 days

Our Iron Casting Projects

Cast Iron Gearbox Housing

Cast Iron Pump Casing

Cast Iron Valve Body

Excavator Yoke (Ductile Iron)

Turbine Support Base(Cast Iron)

Cast Iron Pipe Tee

Sand
Casting

Versatile and cost-effective for large or complex parts. Ideal for heavy-duty machinery and structural components.
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Steel
Casting

High-strength steel castings for demanding applications. Perfect for pressure vessels, valves, and mining equipment.
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Aluminum
Casting

Lightweight and corrosion-resistant aluminum castings for enclosures, housings, and precision components across multiple industries.
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Our Iron Casting Process

We use a range of iron casting routes to match different part sizes, shapes, and performance requirements.
Sand casting, shell molding, and ductile iron casting are our core processes, supported by core making, heat treatment, and final machining as needed.
This flexible approach allows us to deliver reliable structural parts for industrial machinery, fluid handling systems, and high-wear applications.

Shell molding process for iron castings

Sand Casting

Sand casting is the most common production route for gray and ductile iron parts, allowing large, complex, and heavy components at low cost.
It is ideal for machine bases, pump bodies, housings, automotive components, and general engineering parts.

Molten iron being poured into a sand casting mold

Shell Molding

Shell molding provides superior dimensional accuracy and surface quality for iron castings, especially thin-walled or intricate shapes.
It is widely used for precision gears, automotive castings, valve bodies, and high-volume industrial components.

Ductile iron centrifugal casting process for tubular components

Ductile Casting

Ductile iron casting offers high strength, excellent shock resistance, and good elongation, making it suitable for structural parts.
Common applications include valves, hydraulic components, crankshafts, hubs, pump impellers, and pressure-bearing equipment.

Common Iron Casting Alloys

We supply gray and ductile iron grades engineered for structural strength, vibration resistance, and wear performance in industrial machinery, pumps, hydraulics, and automotive applications.

The following grades are common choices offering reliable strength, impact toughness, and machinability for cost-effective, long-service components.

Iron Grade Key Properties Typical Applications Example Parts
ASTM A48 Class 30 Gray cast iron with good damping capacity and machinability. Offers sufficient strength for lightly-loaded structural components. Machine bases, housings, compressor covers, and general industrial components. Lathe Bed, Compressor Housing, Pump Cover
ASTM A48 Class 40 Higher-strength gray iron with better wear resistance and hardness. Suitable for components requiring dimensional stability and vibration control. Gear housings, brake components, engine blocks, and friction parts. Gearbox Housing, Brake Drum, Machine Frame
ASTM A536 65-45-12 Ductile (nodular) cast iron offering good ductility, moderate strength, impact resistance and weldability. Excellent fatigue performance. Automotive suspension, pressure-bearing parts, and industrial machinery components. Suspension Arm, Flange, Pressure Housing
ASTM A536 80-55-06 Higher-strength ductile iron with improved hardness and wear resistance, suitable for medium-stress mechanical components. Hydraulic parts, gears, hubs, and rotating machinery elements. Gear Hub, Hydraulic Body, Pump Impeller
ASTM A536 100-70-03 High-strength ductile iron with excellent tensile strength and fatigue resistance, suitable for high-load structural and safety-critical applications. Heavy-duty shafts, crank components, lifting equipment, and pressure systems. Crankshaft, Shaft Sleeve, Structural Bracket

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FAQ – Frequently Asked Questions about Iron Casting

Iron casting involves pouring molten iron—typically gray or ductile iron—into molds to create shaped parts. It’s ideal for producing durable and cost-effective components.
Common grades include gray iron (HT200) and ductile iron (QT450, QT500), selected based on strength, wear resistance, and application needs.
  • Excellent vibration damping and wear resistance
  • Cost-effective for large volume production
  • Good machinability and thermal conductivity
  • Suitable for automotive, pump, and industrial components
  • Green Sand Casting
  • Resin Sand Casting
  • Shell Mold Casting
The choice depends on the desired surface finish, dimensional accuracy, and production scale.
Yes. Ductile iron can be heat-treated to improve strength or toughness. Both gray and ductile iron castings can be precision machined as needed.
  • CAD-based mold design and simulation
  • Metallurgical testing and chemical analysis
  • Dimensional inspections and NDT (UT/MT) if required
  • Final surface and machining quality checks
These measures ensure reliable performance in demanding industrial environments.

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