Precision Custom Steel Casting 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 custom industrial steel castings foundry
From the selection of raw materials and mould design to casting, machining, heat treatment and assembly—every stage of the process is carried out under one roof: no middlemen, no coordination gaps, just a single partner who takes full responsibility for your bespoke industrial steel castings.
Stainless Steel Yoke Castings
Stainless Steel Pivot Hinge Castings
Stainless Steel Casting Bearing Support Bracket
Stainless Steel Casting Valve Body
Pump Impeller Stainless Steel Stainless Casting Parts
Custom Stainless Steel Complex Geometry Bracket
High Quality Stainless Steel Casting Meat Grinder Accessories
Stainless Steel Casting Foot Pedal Bracket
Our supported Custom casting steel Materials
We manufacture a wide range of custom steel castings, including carbon steel, alloy steel and stainless steel, and maintain full process control from smelting through to inspection.
stainless steel Casting Parts
Ideal for corrosive environments. We cast 304, 316, and duplex stainless grades with tight dimensional tolerances, smooth as-cast surfaces, and full traceability — trusted by chemical, marine, and food-equipment OEMs.
Carbon Steel Casting Parts
Our most cost-efficient option for structural and mechanical components. Strong weldability, excellent machinability, and proven performance in pump bodies, valve housings, and heavy-duty frames.
alloy steel Casting Parts
Engineered for extreme conditions. Our alloy steel castings deliver superior hardness, wear resistance, and impact toughness — the standard choice for mining, drilling, and high-load power transmission parts.
In-House Machining for OEM Cast Steel 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 Steel Parts
Every cast steel part is inspected before shipment — surface cracks, internal porosity, and structural defects are all caught in-house, so defective parts never reach your production line.
Fluorescent magnetic particle flaw detector
Detects surface and near-surface cracks in cast steel parts — critical for components under cyclic stress or dynamic loading.
X-RAY
Reveals internal shrinkage, porosity, and inclusions inside complex cast steel geometries that surface inspection cannot reach.
Ultrasonic Testing
Measures wall thickness and detects sub-surface defects in large or heavy-section cast steel parts without cutting or damage.
Advantages Of Our high quality OEM cast Steel 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.
Our Custom Cast Steel 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
Secondary Operations and Treatment of Custom Steel Casting 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.
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.
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