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Henan San Kuang Machinery Technology Co., Ltd. proudly presents our High-Strength Steel CNC Machined Castings with Dimensional Accuracy ±0.05mm. Established in 2014, our company operates a state-of-the-art facility spanning 10,000–30,000 square meters, with an annual export value exceeding US$2.5 million. We leverage advanced CNC machining centers and decades of casting expertise to deliver components that meet the most stringent industrial requirements. These castings combine the inherent toughness of high-strength steel with the precision of computer-controlled machining, ensuring repeatable accuracy and superior performance in demanding applications.
Our manufacturing process begins with investment casting or sand casting, followed by multi-axis CNC milling, turning, and drilling. Every part is rigorously inspected using CMM (Coordinate Measuring Machine) and other metrology tools to guarantee the ±0.05mm dimensional tolerance. The result is a finished product that minimizes assembly issues, reduces scrap, and extends service life.
Key Product Features & Benefits
- Superior Material Strength – High-strength steel alloys (e.g., 4140, 4340, or customized grades) provide exceptional load-bearing capacity and wear resistance, ideal for heavy-duty machinery and structural components.
- Uncompromising Precision – CNC machining achieves dimensional accuracy within ±0.05mm, eliminating the need for secondary finishing and ensuring interchangeability in complex assemblies.
- Complex Geometry Capability – Our foundry and CNC systems handle intricate shapes, thin walls, deep cavities, and tight radii, reducing the number of parts needed per assembly.
- Wide Range of Sizes & Weights – From 0.1kg to 500kg per piece, we accommodate both small series and high-volume production runs.
- Consistent Quality – Every batch undergoes statistical process control (SPC) and is backed by multiple certifications including ISO9001, ISO14000, OHSAS18001, and more.
- Cost-Effective Solution – By combining casting near-net shape with precision CNC, material waste is minimized and machining time is optimized, offering competitive pricing without compromising quality.
Technical Specifications (Typical)
| Parameter | Value / Range |
| Material | High-Strength Steel (e.g., 4140, 4340, 8620, or per customer specification) |
| Dimensional Tolerance | ±0.05mm (for features up to 300mm; larger features per agreement) |
| Surface Roughness | Ra 0.8 – 3.2 μm (standard), finer available on request |
| Hardness | 20 – 55 HRC (through heat treatment or as-cast) |
| Weight per Piece | 0.1 kg – 500 kg |
| Secondary Operations | CNC milling, turning, drilling, tapping, grinding, heat treatment, surface coating |
| Inspection Equipment | CMM, Optical Comparator, Hardness Tester, Ultrasonic, X-ray (optional) |
Why Choose Henan San Kuang Machinery Technology?
- Global Reach & Trust – Our products are exported to North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East, serving industries like automotive, aerospace, mining, and construction.
- Certified Quality Systems – We maintain ISO9001, ISO14000, OHSAS18001, and other certifications (e.g., TL900, HACCP, SA8000) – all verified through regular audits. Each shipment complies with international standards.
- Experienced Team – With 51–100 dedicated employees and over a decade of growth since 2014, we combine engineering know-how with responsive customer service.
- Flexible Logistics – Shipping from Port of Shanghai, Lianyungang, Qingdao, or Tianjin, we offer FOB terms and timely delivery within 30–45 days for most orders.
- Customization – We welcome drawings or samples for custom castings. Our engineers will optimize the design for manufacturability and cost efficiency.
We invite you to partner with a reliable manufacturer that delivers high-strength, high-precision steel castings backed by robust quality management. Contact our sales team to discuss your specific requirements or request a quotation. Let us help you achieve greater performance and reliability in your applications.
Frequently Asked Questions
Q1: What steel grades do you typically use for high-strength castings?
A: Common grades include 4140, 4340, 8620, and other low-alloy high-strength steels. We can also work with customer-specified materials or modify composition for specific hardness/ductility requirements.
Q2: Can you achieve ±0.05mm accuracy on all features?
A: The ±0.05mm tolerance is achievable for machined features up to 300mm in dimension. For larger parts or non-machined cast surfaces, tolerances may be wider. We verify every critical dimension with CMM and provide inspection reports upon request.
Q3: What is the minimum order quantity (MOQ)?
A: MOQ depends on complexity and weight. Typically, we accept orders starting from 50 pieces for standard designs. For prototypes or custom designs, lower MOQs are negotiable.
Q4: Do you provide heat treatment and surface coating?
A: Yes, we offer in-house or outsourced heat treatment (quenching, tempering, annealing, case hardening) and surface coatings like zinc plating, phosphating, or painting. Please specify your requirements.
Q5: How do you ensure quality consistency across large batches?
A: We implement SPC (Statistical Process Control) during machining, and each batch undergoes first-article inspection and sample testing. Our ISO9001 system ensures traceability and corrective actions when needed.
Q6: What shipping ports do you use, and what are typical lead times?
A: We ship from Shanghai, Lianyungang, Qingdao, or Tianjin ports. Standard lead time is 30–45 days after order confirmation. Urgent orders can be expedited with additional charges.
Q7: Can you provide certifications like material test reports or dimensional reports?
A: Absolutely. We provide material certificates (mill test certificates), dimensional inspection reports, and any other documentation required by your quality department.
Q8: Do you have experience with export to Europe or America?
A: Yes, our main markets include North America, Western Europe, and Eastern Europe. We comply with international packaging standards and can adapt to specific customer documentation needs.
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