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Henan San Kuang Machinery Technology Co., Ltd., established in 2014 with a factory spanning 10,000-30,000 square meters and a team of 51-100 skilled professionals, proudly presents our Custom Machined Components with ±0.005mm Tolerance from 304 Stainless Steel for Industrial Automation. These components are engineered to meet the rigorous demands of modern automated production lines, offering unparalleled precision, durability, and corrosion resistance. With an annual export value of US$2.5-5 million and serving markets across North America, South America, Europe, Asia, and beyond, we combine cost-effective manufacturing with world-class quality control.
Our manufacturing process leverages advanced CNC machining centers and multi-axis equipment to achieve tolerances as tight as ±0.005mm, ensuring every part fits seamlessly into your automation assemblies. The use of 304 austenitic stainless steel provides excellent mechanical properties, including high tensile strength, good formability, and outstanding resistance to oxidation and corrosive environments. Whether you need custom shafts, brackets, gears, or housings, our team works closely with you to deliver components that optimize your equipment's performance.
Key Features & Technical Specifications:
- Precision Tolerance: ±0.005mm (0.0002 inches) achievable on critical dimensions, verified by CMM (Coordinate Measuring Machine) and other precision instruments.
- Material: 304 Stainless Steel (1.4301) – compliant with ASTM A240, A276, and EN 10088 standards.
- Surface Finish: Standard as-machined Ra ≤ 1.6 μm; optional passivation, electropolishing, or bead blasting available upon request.
- Processing Capabilities: CNC turning (up to Ø500mm x 1000mm), milling (3-axis, 4-axis, 5-axis), drilling, tapping, grinding, and wire EDM.
- Customization: Parts can be produced according to 2D drawings or 3D models (STEP, IGES, SolidWorks, AutoCAD).
- Quality Assurance: 100% inspection of critical dimensions; batch sampling per ISO 2859-1 standards.
- Lead Time: Standard 10-15 working days for prototypes; production quantities depend on complexity.
| Parameter | Details |
|---|---|
| Material Grade | 304 Stainless Steel (0Cr18Ni9) |
| Yield Strength | ≥ 205 MPa (30 ksi) |
| Hardness (Brinell) | ≤ 187 HB |
| Elongation | ≥ 40% |
| Corrosion Resistance | Excellent in atmospheric and mild chemical environments |
| Temperature Range | -196°C to 800°C (intermittent use) |
Benefits for Your Industrial Automation Systems:
- Enhanced Reliability: Tight tolerances reduce wear, vibration, and downtime in automated machinery, ensuring consistent operation over long periods.
- Simplified Assembly: Parts are interchangeable and fit precisely without rework, saving time and labor costs during installation.
- Longer Service Life: 304 stainless steel resists rust and corrosion, even in harsh factory environments with moisture, chemicals, or high temperatures.
- Weight Reduction: Our optimized designs can reduce material without compromising strength, lowering the inertia of moving parts and improving energy efficiency.
- Supply Chain Efficiency: With our ISO9001, ISO14000, and QS9000 certified processes, you get consistent quality batch after batch, reducing inspection burden.
- Global Shipping: We ship from major Chinese ports (Shanghai, Qingdao, Tianjin, Lianyungang) with reliable logistics partners, ensuring on-time delivery.
At Henan San Kuang, we have manufactured over 10,000 different custom components for clients in North America, Europe, and Southeast Asia. Our dedicated engineering team works directly with your R&D department to optimize designs for manufacturability, often reducing costs by 15-20% through process improvements. We offer free design reviews and DFM (Design for Manufacturing) feedback.
Trust & Certifications: Our facility is certified under multiple international standards including ISO9001, ISO14000, OL 9000, TL900, SA8000, and OHSAS18001, reflecting our commitment to quality, environmental responsibility, and social accountability. We have also achieved HACCP and other industry-specific certifications, demonstrating our versatility. Every shipment includes a Certificate of Conformance (COC) and material test reports (MTR) upon request.
Contact us today to discuss your next automation project. Send us your drawings or specifications, and we will provide a competitive quotation with a short lead time. Let Henan San Kuang Machinery Technology Co., Ltd. be your trusted partner for precision stainless steel components.
Frequently Asked Questions (FAQ)
Q1: What file formats do you accept for custom machining?
A: We accept 2D drawings (PDF, DWG, DXF) and 3D models (STEP, IGES, SolidWorks, Autodesk Inventor, STL). For complex parts, 3D models are preferred.
Q2: Can you achieve ±0.005mm on all features, or only on certain dimensions?
A: The ±0.005mm tolerance is achievable on critical features such as bore diameters, shaft diameters, and mating surfaces. For non-critical features, we apply standard tolerances (±0.05mm) to balance cost and precision. Please specify critical dimensions on your drawing.
Q3: What is the typical lead time for a prototype order?
A: For standard 304 stainless steel parts with moderate complexity, prototype lead time is 10-15 working days. Rush orders can be expedited to 5-7 working days with additional charges.
Q4: Do you offer any surface treatment for improved corrosion resistance?
A: Yes, we offer passivation (ASTM A967), electropolishing, and bead blasting. Passivation is recommended for automation components exposed to cleaning agents or humidity.
Q5: How do you ensure the quality of machined parts before shipping?
A: We have a comprehensive quality control system including in-process inspection, first-article inspection (FAI) with full dimensional report, and final inspection using CMM, optical comparators, and surface roughness testers. Certified material test reports are available.
Q6: Can you produce parts with a surface finish better than Ra 1.6 μm?
A: Yes, we can achieve Ra 0.8 μm or even Ra 0.4 μm through fine grinding or polishing. Please specify your requirement, as tighter surface finish may affect cost and lead time.
Q7: What is the minimum order quantity (MOQ) for custom components?
A: For 304 stainless steel parts, our MOQ is 10 pieces for prototypes and 50 pieces for production. However, we are flexible for small quantities depending on complexity and cooperation.
Q8: Do you provide samples before mass production?
A: Yes, we can produce samples first for customer approval. Sample cost is negotiable and will be deducted from mass production order.
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