Durable Custom
iron casting parts Manufacturer
Grey cast iron and ductile cast iron, with tolerances controlled to within ±0.3 mm and finished to your exact specifications. We specialize in thick-walled structural components, complex internal cavities, and heavy-duty parts.
99.6%
Inspection Pass Rate
26
Years of Experience
ISO
ISO 9001:2015 Certified
100%
In-House Control
One Stop OEM casting iron company
FERR’s grey cast iron and ductile iron castings are manufactured strictly in accordance with the specifications set out in the drawings. Before dispatch, they undergo sand casting, machining, inspection, and third-party verification.
Valve Protection Box
Water Meter Enclosure
Custom wholesale agricultural plow machine iron castings
Custom wholesale iron cast parts for combine harvester
Custom cast iron flywheel housing
Custom cast iron junction box
Custom cast iron end cover
Custom cast iron agricultural ring
Custom outdoor cast iron drain covers
Custom cast iron engine block
Custom cast iron pulley
Custom cast iron drain cover
Custom cast iron grate
Custom cast iron manhole cover
Custom cast iron wheels
Custom cast iron piston ring
Custom cast iron flywheel
custom cast iron weights
custom cast iron test weights
Our supported iron casting Parts Materials
FERR supports the production of custom parts in both ductile and gray iron to ensure that material properties align with application requirements.
Ducitle Iron Casting Parts
Ductile iron offers superior tensile strength and impact resistance compared to gray iron, along with sufficient ductility to prevent cracking under dynamic loads. It is particularly suitable for automotive steering knuckles, hydraulic housings, and load-bearing brackets that require high fatigue life.
Learn More
Grey Iron Casting Parts
These castings offer excellent vibration damping, thermal stability, and machinability, along with a lower cost per kilogram. They are the material of choice for machine tool beds, pump bodies, valve bodies, and components where compressive strength and dimensional stability are the primary considerations.
Learn MoreIn-House Machining for OEM Cast Iron Parts
Every cast steel component we produce is machined, drilled, tapped and cleaned in-house. Products leaving our factory are dimensionally accurate and ready for immediate use on your assembly line.
Tapping Workshop
Auto Cleaning Line
Cutting
Drill Hole
Punching Machine
Bending Machine
Laser-Beam Welding Machine
Milling Machine
Spray Sand Machine
Ultrasonic Cleaners
Tapping Machine
CNC Engraving Machine
NDT Inspection for Cast iron Parts
Every cast iron component undergoes rigorous inspection prior to dispatch—surface cracks, graphite anomalies, internal porosity and structural defects are all detected in-house.
Fluorescent magnetic particle flaw detector
Detects surface and near-surface cracks in cast iron parts — especially effective for identifying cold shuts and micro-cracks in components subject to cyclic loading or vibration.
X-RAY
Reveals internal shrinkage cavities, porosity clusters, and graphite distribution anomalies inside complex cast iron geometries that surface inspection cannot detect.
Ultrasonic Testing
Measures wall thickness and detects sub-surface defects in large or heavy-section cast iron parts — adapted with low-frequency probes to overcome graphite-induced signal scattering.
Advantages Of Our OEM cast iron casting parts
We achieve this by strictly enforcing zero defects in our internal processes, ensuring absolute consistency in physical properties across batches, and thoroughly eliminating residual stress, enabling our products to meet your specific load, temperature, and tolerance requirements. We deliver high-quality, custom iron castings that perfectly match your drawings and assembly needs, with no need for rework.
Where Our Iron Castings Parts Are Put to Work
Cast iron components meet the requirements for applications ranging from heavy machinery bases to high-pressure fluid systems, offering excellent compressive strength, wear resistance, and thermal stability.
Industrial Machinery & Machine Tools
Machine tool beds, gearbox housings, bearing housings, and spindle heads—cast iron components offer outstanding rigidity and vibration-damping properties, ensuring that precision equipment maintains dimensional stability under sustained loads.
Fluid Control & Piping Systems
Our grey cast iron and ductile iron valve bodies, pump casings, and pipe fittings are specifically designed for high-pressure, high-temperature fluid systems, with wall thicknesses and pressure ratings compliant with API and DIN standards.
Agricultural Equipment
The complex housings and heat sinks we manufacture offer excellent thermal conductivity and weather resistance, making them ideal for outdoor telecommunications and power grid infrastructure.
Secondary Operations and Treatment of iron casting parts We Offer
Our iron casting process Manufacturing Approach
We exercise strict control over every stage of the cast iron process, from pattern design and sand preparation to inoculation, shaking and CNC finishing.
Pattern Design and Sand Preparation
Our engineers specifically design the gating system, riser layout and draft angles to account for the shrinkage characteristics of grey or ductile iron. Depending on the complexity of the component and the required surface finish, we select either green sand or resin-bonded sand, and strictly control the moisture content and permeability of each batch of sand to prevent porosity defects.
Inoculation, Pouring and Solidification Control
Before pouring, the molten iron is inoculated to refine the graphite morphology—promoting flake graphite formation in grey cast iron to enhance damping properties, or promoting spheroidal graphite formation in ductile iron to improve tensile strength. By monitoring pouring temperature and filling rate, we minimize turbulence, shrinkage cavities, and cold shuts.
Demoulding, Heat Treatment and CNC Machining
Following controlled cooling, the castings are demoulded, shot-blasted, and inspected for surface and dimensional integrity. Where mechanical properties are required, annealing or normalising is carried out. Subsequently, surfaces with tight tolerances are finished on our CNC machining centers and verified using a coordinate measuring machine (CMM) before dispatch.
Our Custom Cast Iron Parts Standards
Every cast iron part we deliver meets clearly defined dimensional, material, and surface standards — with full inspection documentation included in every order
Standard
Description
Dimensional Tolerance
CT8–CT12 per ISO 8062-3; tighter tolerances achievable with CNC post-machining
Surface Roughness
Ra 6.3–25 μm (as-cast); Ra 1.6–3.2 μm (after machining) per ISO 1302
Material Standard
Grey iron: EN-GJL-200/250/300 (EN ISO 185); Ductile iron: EN-GJS-400/500/600 (EN 1563); ASTM A48 / A536 available
Chemical Composition Control
Spectrometer analysis per heat; CE, Si, Mn, S, P controlled within ±0.05%
Hardness Standard
Grey iron: 170–260 HB; Ductile iron: 140–300 HB; tested per ISO 6506
Quality Certification
ISO 9001:2015; material certs and full inspection reports provided per order
NDT & Inspection
CMM dimensional report + visual per EN 1370 + optional UT/RT per customer spec
Prototypes and Parts Made Easy
1
Provide 3d drawings
Send us your initial concept or idea, and our expert team will craft precise 3D drawings to bring your vision to life.
2
Evaluate the quotation
Once we receive your drawings, we will evaluate the specifications and provide you with a competitive
3
Manufacturing
Upon approval, we begin the manufacturing process using advanced techniques and high-quality materials
4
Order delivery
Once your product is ready, we’ll coordinate a timely delivery that suits your schedule
Let's get started
- 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.
FAQ
We deliver fully machined, ready-to-assemble parts, not just raw castings. We offer surface treatment services for custom parts.
We adhere to strict manufacturing standards. Every batch undergoes rigorous spectrometer analysis to confirm the exact grade of gray or ductile iron. Combined with advanced non-destructive testing (NDT) technology, we ensure that castings are free of defects and leaks and can withstand high-pressure environments.
Absolutely. Whether it’s the high corrosion resistance required for industrial piping systems, the exceptional thermal conductivity needed for telecommunications heat sinks, or the high strength-to-weight ratio required for structural components, we can precisely match and cast the specific aluminum alloy grade you need.
Tooling and First Article Samples (FAS) typically take 3 to 5 weeks. Once the sample is approved, we’ll keep your lead times stable for mass production so your assembly line doesn’t wait for parts.
Let’s talk about your next project !
Whether you have detailed drawings or just a concept, we’re ready to listen.
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.
Start A New Quote
Upload Your FilesGet a Quote Now
Upload Your FilesGet a Quote NowSTEP STP SLDPRT IPT PRT SAT IGES IGS CATPART X_T OBJ STL files