Cangzhou Famous International Trading Co., Ltd
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Lab Precision Black Granite Calibration Surface Plate Testing Table
Granite Surface Plates are used for precision gauging, inspection, layout and marking purposes.
They are preferred by Precision Tool Rooms, Engineering Industries and Research
Laboratories because of their following outstanding advantages.
No rust, no corrosion, relatively warp-free, no compensating hump when nicked,
longer wear, smoother action, greater precision, non magnetic, less care after
commissioning, lower co-efficient of thermal expansion and non glaring surface.
Proportion,2970-3070kg/m3
Compression strength,245-254kg/mm2
Flexible grinding capacity,1.27-1.47N/mm2
Coefficient of linear expansion,4.6×1-6°C
Water absorption 0.13%
Shore hardness HS, more than 70.
Precision has 00, 0, 1 grade.
