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Granite Measuring Tool-Granite Surface Plate

Granite Measuring Tool-Granite Surface Plate

Detail Specifications / Descriptions

Physical Properties of "JiNan Black"Granite Rock

Specific Gravity : 2970~3070kg/m3 
Compressive Strength: 245~354N/mm2
Elasitic Modulus: 1.27~1.47N/mm2
Linear Expansion Coefficient: 4.61x10^-6/℃
Water Absorptivity: <0.13%
Shore Hardness: Hs70

black granite suiface accuracy
please refer advanced leading

grade 000 1×(1+d/1000) μm
grade00 2×(1+d/1000) μm
grade0 4×(1+d/1000) μm
grade1 8×(1+d/1000) μm
(d is the length of the palate’s diafonal mm)

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Company: SHANDONG GAOTANG EASTSUN PRECISION MECHANIC CO., LTD.

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