Insulating Fire Bricks Supplier from Zhengzhou, China. We provide various types of heat-insulating bricks. We accept custom sizes.

The cheapest price. The best quality.

Insulating Fire Bricks is also known as: alumina-silicate fire brick.(Mullite insulation brick) using a-AL203 mullite powder, kyanite and other high-purity raw materials.

The first to use high-temperature sintering, the final will conducted cutting and grinding the surface of each bricks made.

Light Insulating Fire Bricks Unique production process can maximize avoid the influence of impurities and structural defects on product performance, Has an extremely excellent high-temperature volume stability.

  • Thermal shock resistance is good.
  • High working temperature.
  • High strength.
  • Low thermal conductivity,

For a variety of furnace type and with a wide range variety of environmental adaptability.

Light Insulating Fire Bricks And is an ideal energy-saving product, the maximum temperature at 1500 ℃

China’s premium Insulating Fire Bricks supplier.


  • Metallurgical industry
  • Machinery industry
  • Ceramic industry
  • Chemical industry
  • Furnace lined with
  • Insulation layer

Technical Data

Al2O3 (%)3754647277
Fe2O3 (%)
Classification Temperature (℃)12601430154016501760
Bulk Density (g/cm3) ≤
Cold Crushing Strength (Mpa)
Modulus of Rupture (Mpa)
Reheating Linear Change (%) CT-30 ℃X 8H1230℃ -0.51400℃ -0.51510℃ -0.51620℃ -0.91730℃ -0.9
Thermal Expansion 1000℃(%)
Thermal conductivity(W/m.k)400℃

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