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Cellular glass plate/tube
    Cellular glass is a new kind of inorganic thermal insulating material with a structure of equally closed cells. It is mainly made of glass added with adequate foaming agents after heating and baking in high-temperature tunnel furnace, then annealed. It well reserves the chemical stability of inorganic glass. As a result, it has the following features: low density, low thermal conductivity, vapor impermeability, no water absorption, incombustibility, protection from mould and rat eating, high mechanical strength but easy to cut and able to bear all kinds of chemical erosions except the hydrofluoric acid.
    Cellular glass, nontoxic in itself, has stable chemical properties and good thermal insulating performance protecting from deteriorating at a wide temperature range from cryogenic temperature to high temperature. At the same time, it can protect from humidity, fire and erosion. It is praised as "permanent thermal insulating material with no need of renewal", because it is not only safe but also durable in rigor conditions of low and cryogenic temperature, underground, open air, flammability, moisture sensitivity and even chemical erosion. Consequently, it is widely applied in permanent projects as heat and cold insulating material, such as in the industries of petroleum, chemical engineering, architecture, refrigerated warehouse, underground project, shipbuilding, national defense and war industry.
Series A:
Technical Properties of High Quality Cellular Glass (Meet ASTM)
Product Type Unit S500 S700 S800 S1000 S1200 S1400 S1600 S2400
Ave.Density kg/m3 105 115 120 130 140 150 160 200
Ave.Thermal Conductivity (10) W/(mK) 0.039 0.0425 0.043 0.044 0.046 0.047 0.048 0.065
Ave.Compressive Strength MPa 0.5 0.7 0.8 1.0 1.2 1.4 1.6 2.4
Chloride Content ppm 25
Water Absorption Vol% 0.5
Service Temp. -268+480
Lineal Expansion Coefficient 1/ 910-6

Series B:Technical Properties of Cellular Glass (Meet JC/T647-2005)
Property Unit S-1 S-2
Density kg/m3 15010 17010
Ave. Thermal Conductivity(10) W/(mK) 0.060 0.064
Ave. Compressive Strength MPa 0.8 1.1
Water Absorption % 0.5
Service Temp. -196+450
Lineal Expansion Coefficient 1/ 910-6