Heavy Duty Granite Inspection Plate
Heavy Duty Granite Inspection Plate is an irreplaceable precision metrology benchmark for high-load industrial quality control,engineered from premium dense black diabase granite with millions of years of natural aging to eliminate internal...
Heavy Duty Granite Inspection Plate is an irreplaceable precision metrology benchmark for high-load industrial quality control,engineered from premium dense black diabase granite with millions of years of natural aging to eliminate internal stresses permanently.
It features ultra-low thermal expansion,non-magnetic properties,superior corrosion resistance against oils,acids and alkalis,and exceptional hardness(Rockwell C60+),ensuring no rust,minimal wear and consistent flatness under heavy workpiece loads.Each plate undergoes CNC rough machining,multi-stage precision lapping and strict flatness testing,complying with ISO 8512-2 and ASME B89.3.7 standards,available in Grade 00/0/1 for labs,production lines and field calibration.
The heavy-duty structure and vibration-damping capability make it ideal for dimensional inspection,parallelism verification,fixture setup and instrument calibration in aerospace,automotive,mold manufacturing and precision machinery sectors.It can handle large castings,turbine blades and machine tool components without deflection.
Maintenance is simple—only regular cleaning with a lint-free cloth and neutral cleaner is needed,no coatings or complex upkeep.Custom sizes,T-slot configurations and anti-slip treatments are offered to meet diverse heavy-load measurement requirements,delivering long-term reliable precision for critical industrial workflows.
