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- Custom-Shaped Granite Surface Plates-½-Laboratory Grade Precision
Custom-Shaped Granite Surface Plates–½-Laboratory Grade Precision
Manufacturer: Shandong Sincere Precision Machinery
We are a leading Chinese manufacturer specializing in ultra-precision granite surface plates. Using exclusive manufacturing techniques developed by our experienced technicians and rigorous quality control, we produce plates guaranteed to ½-Laboratory Grade tolerance – exceeding standard Grade 00 accuracy. We are proud to be one of the few manufacturers in China capable of delivering this level of precision at scale.
Any Shape You Need –Fully Customizable
We offer a wide variety of plate shapes beyond standard square and rectangular:
Square & Rectangular:classic designs for general inspection;
Large-Size Plates:for heavy-duty or oversized workpieces;
Round Plates:ideal for rotary inspection and indexing applications;
Special-Profile Flat Plates:custom contours for unique fixtures or machinery
Full Customization Services:
Manufactured strictly per your drawings
Non-standard dimensions available
T-slots, threaded holes, counterbores, and complex cutouts integrated
Sizes from 300×300 mm benchtop plates to 3000×2000 mm+ floor platforms
All custom products pass the same strict quality assurance as standard models.
Premium Material & Lasting Stability
Our granite surface plates use fine-grained granite (e.g., Jinan black, South africa black) for superior dimensional stability, low thermal expansion, high wear resistance, and natural vibration damping. Natural aging treatment ensures long-term reliability.
Additional Product:
We also supply our own brand of granite surface stand ensuring that the surface plate maintains a flatness reference grade over long-term use.
Quality Assurance
Detailed inspection report included. Compliant with ISO 8512-2, DIN 876, JIS B 7513, and Federal Spec GGG-P-463c.
Payment Terms
T/T, L/C, or negotiable.
Contact Us
Send your drawing or specifications for a competitive quote. From one plate to bulk orders, we deliver precision you can trust.
Shandong Sincere Precision Machinery supplies its own brand of granite surface plate cleaner to help maintain long-term accuracy and surface quality.

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