Grade 00 Black Granite Inspection Surface Plate

The Grade 00 black granite inspection surface plate, manufactured at our factory Shandong Sincere Precision Granite Company Limited, is our premium ultra-precision metrology benchmark. As a direct manufacturer rather than a trading company, we carry out full in-house production for projects requiring extremely tight flatness and stable readings. It is widely used in temperature-controlled metrology labs, CMM stations, optical testing and aerospace component inspection, ideal for customers with strict tolerance requirements.

Unlike Grade A plates made for daily factory QC, Grade 00 delivers much stricter flatness tolerance. It must work inside climate-controlled measurement rooms. Compared with top-tier AA grade, Grade 00 offers outstanding precision with more practical pricing for sophisticated high-precision measurement tasks.

At Shandong Sincere Precision Granite Company Limited, we are the original manufacturer. Every Grade 00 granite plate is produced within our own workshop following strict international tolerance standards. Each unit ships with a calibration certificate to verify ultra-precise flatness and reliable repeatable measurements. All calibration data can be traced back to N.I.S.T. or equivalent global metrology institutions. Our factory is ISO9001 certified, and we supply ISO17025 accredited calibration services. Products comply with ANSI/NCSL Z540-1 and ISO10012. Long-form certificates can be provided if you need documentation for internal or third-party audits.

Our factory Shandong Sincere Precision Granite Company Limited selects high-quality dense black granite blanks directly from our raw material reserves. Its fine, even grain brings great rigidity and minimal dimensional shift. This granite material maintains ultra-precise flatness without extra thick slabs, reducing total weight and making transport and on-site installation easier.

Natural black granite features low thermal expansion, excellent vibration damping, non-magnetic and anti-corrosion properties. It will never rust like cast iron, keeping stable ultra-precision performance for years when used in controlled lab environments.

Custom machining options are available. Our in-house production team at Shandong Sincere Precision Granite Company Limited can cut custom sizes, drill mounting holes and embed stainless steel threaded inserts according to your technical drawings. All finished plates pass multiple rounds of high-precision flatness inspection before packing.

Trade Terms

• Delivery: Sea freight or other transport upon request
• Production Lead Time: 25 working days
• Payment: T/T, L/C

RAQ

Q1: What environment is required for Grade 00 granite surface plate to maintain its precision? A: Grade 00 plate needs a temperature-controlled metrology room. Sharp temperature fluctuation will affect measuring accuracy, so stable ambient temperature is essential.

Q2: Is Shandong Sincere Precision Granite Company Limited a manufacturer or trading company? A: We are a direct manufacturer, not a trading firm. All Grade 00 granite plates are fully processed at our factory. We support full custom machining.

Q3: Can Shandong Sincere Precision Granite Company Limited add threaded inserts on Grade 00 granite plate? A: Yes. As the factory, we can embed stainless steel threaded inserts on the granite plate. Please send your technical drawing to confirm the hole positions and sizes.

Q4: Is the calibration certificate NIST traceable? A: Sure. Each Grade 00 plate manufactured at our factory Shandong Sincere Precision Granite Company Limited comes with NIST traceable calibration report. Long-form certificate is available on request for audit purposes.

RFQ

1.Please share the plate dimension and order quantity for formal quotation of Grade 00 granite surface plate.

2.Let us know if drilled holes or embedded threaded inserts are needed, send drawings for custom machining pricing.

3.Inform us of your destination port and expected lead time, we will confirm production timeline and shipping cost.

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