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Granite precision measure
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Granite Precision Measure
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Parameters
Pyysical Properties of"Jinan Black" Granite：
☆ Specific Gravity： 2970~3070kg/m3
☆ Compressive Strength： 245~254N/mm2
☆ Elastic Modlues： 1.27~1.47/mm2
☆ Linear Expansion Coefficient： 4.61 × 10-6/°C
☆ Water absorptivity：＜ 0.13%
☆ Shore Hardness：＞ Hs70
γ irradiation rate is based onf JC518-93,the inspecting results are as follows.Technical requiement:5.2 × 10-3 μ c/kg · h Inspecting data; 2.6 × 10-3 μ c/kg · h This product belongs to item A,the using scope is unconstrainedγ
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