Precision Granite Inspection Surface Plate China Factory and Suppliers
The STORAEN Granite Inspection Surface Plate is a high-precision metrology foundation engineered for the most demanding industrial environments. Meticulously processed using advanced machine tools and hand-ground within constant temperature chambers, these plates provide an ultra-flat reference surface essential for precision gauging, layout, and marking. By leveraging the natural stability of igneous rock, our plates eliminate the internal stresses found in metallic alternatives, ensuring micron-level accuracy for aerospace, automotive, and CNC machining applications.
Designed for longevity and extreme reliability, these granite platforms are characterized by their exceptional hardness, rust-proof properties, and superior vibration damping. Available in a wide range of standard and customized sizes—from compact 200x200mm lab plates to massive 3000x5000mm industrial tables—STORAEN solutions integrate seamlessly with CMMs and height gauges. Whether you require a basic flat surface or specialized configurations with T-slots and tapped holes, our plates deliver the geological perfection required for absolute measurement integrity.
Detailed Parameters
| Specific Gravity | 2970-3070kg/m³ | Compressive Strength | 245-254kg/m² |
|---|---|---|---|
| Elastic Wear | 1.27-1.47N/mm² | Linear Expansion Coeff. | 4.6 × 10⁻⁶/℃ |
| Water Absorption | 0.13% | Shore Hardness | HS70 or above |
| Precision Grades | 000, 00, 0, 1, 2 | Surface Finish | Ground Finish (Ra ≤ 0.8μm) |
| Size Range | 200x200mm to 3000x5000mm | Custom Options | T-slots, Tapped Holes, OEM/ODM |
Key Advantages
Extreme Stability
Natural granite structure eliminates internal stress and prevents warping over time, ensuring consistent measurement reliability.
Wear Resistance
With Shore hardness HS70+, our plates resist scratches and indentations from heavy gauges and fixtures during daily use.
Vibration Damping
Absorbs 80% more vibration than cast iron, minimizing interference from adjacent CNC machinery for precise CMM alignment.
Corrosion Proof
Non-porous surface is naturally rust-less and resistant to oils, solvents, and coolants commonly found in workshops.
Thermal Resilience
Low linear expansion coefficient minimizes dimensional changes across temperature fluctuations (10-30°C).
Zero Magnetism
Non-magnetic properties prevent electromagnetic interference, ideal for semiconductor and medical device testing.
Product Gallery
Management Platforms
Bespoke Sizing
Custom lengths, widths, and thicknesses from lab-scale to oversized heavy machinery platforms.
Precision Machining
Integration of ISO 2571 T-slots and M6-M24 threaded holes for secure gauge and fixture clamping.
Quality Certification
Verification via laser interferometers ensuring compliance with ISO 8512 and ASME B89.1.3 standards.
Thermal Stabilization
72-hour stabilization at 20±2°C to eliminate residual machining stresses for long-term stability.
Surface Protection
Optional anti-static coatings for semiconductor and medical device manufacturing environments.
Global Support
Professional installation guidance and periodic recalibration services for worldwide shipments.
Investment Return Comparison
| Feature | Cast Iron Plates | STORAEN Granite Plates |
|---|---|---|
| Corrosion Risk | High (Requires Oil) | Zero (Rust-less) |
| Dimensional Stability | Prone to Internal Stress | Exceptional (Stress-Free) |
| Vibration Absorption | Moderate | High (Superior Damping) |
| Surface Hardness | Lower | High (HS70+ Shore) |
| Maintenance Cost | Recurring (Painting/Oiling) | Minimal (Simple Cleaning) |
Frequently Asked Questions
Granite is preferred because it is naturally rust-proof, possesses higher hardness, and has no internal stresses, which prevents the warping and corrosion common in cast iron plates.
Yes, we offer full OEM/ODM support including custom dimensions (up to 5000x8000mm), T-slots, and threaded holes to meet specific industrial requirements.
We provide multiple precision grades including 000, 00, 0, 1, and 2, catering to different needs from ultra-precision lab work to general workshop marking.
Our plates feature a low linear expansion coefficient (4.6 × 10⁻⁶/℃), ensuring minimal dimensional change even in environments without strict temperature control.
Absolutely. Due to their high rigidity, low porosity, and excellent vibration damping, they provide the ideal stable base for Coordinate Measuring Machines (CMM).
Maintenance is simple: keep the surface clean of dust and debris using a soft cloth and mild cleaner. Unlike metal plates, no rust-preventative oil is required.
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