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Grey Limestone 40-80



    Color: Grey and Dark Grey

    - CaO Content: 53.33% - TCVN 9191:2012

    - MgO Content: 1.42% - TCVN 9191:2012

    - SiO2 Content: 0.16% - TCVN 9191:2012

    - Sulphur (S) Content: 0.016 - TCVN 9191:2012

    - Phosphorus (P) Content: 0.006 - ASTM C25

    Technical Report:

    - Compressive strength (ASTM C170-16): 56 MPA

    - Modulus of rupture (ASTM C99-15): 14 MPA

    - Mohs hardness (TCVN 6415-18:2005): 6 (Orthoclase)

    - Water absorption (ASTM C97-15): 0.1 %

    - Bulk specific gravity (ASTM C97-15): 2713 Kgs/m3



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About our company

Thanh Cong Stone Group was developed based on Thanh Cong Corporation that has headquarters in Quy Hop Industrial Zone  Nghe An Province VietNam.  Our Company was one of the first enterprises that built a foundation for Stone Industry in Quy Hop Town. We have more than 20 years of development and promotion so that why now we are well-known to domestic partners and oversea partners those come from over the world. Our main activities include: Mining, Producing, Import and Export Stone Products, Processing and installing the products related to Stone! 

Our staffs have very specific skills and abilities in doing selection and producing stone, which will satisfy every highly strict requirements from customer.  Our products are being exported to India, Canada,Australia, China, Taiwan, US, UK, Korea, Belgium, Netherlands Malaysia, Singapore…., Now, Our Company still continuously up-to-date modern equipment and focus on training staffs in order to bring the highest-quality products to customer.  


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