Product Features: low thermal conductivity, good insulation properties. The main application areas: the need to isolate heat conduction is mainly used to prevent heat loss, and does not withstand the abrasion of the site. Such as: the cracks and wear-resistant layer between the furnace wall. After the product names lightweight lightweight refractory castable refractory castable refractory castable lightweight lightweight refractory castable grades GL-P-130 GL-S-135 GL-C-140 GL-P-130 110 ℃ bake: physical and chemical indicators bulk density (g / cm3) 1.5-1.6 1.7-1.8 1.7-1.8 1.8-1.9 cold flexural strength (MPa) 110 ℃ * 24h ≥ 4 ≥5 ≥7 ≥7 1100 ℃ * 3h ≥4 ≥7 ≥8 ≥ 8 Cold compressive strength (MPa) 110 ℃ * 24h ≥30 ≥50 ≥40 ≥60 1100 ℃ * 3h ≥30 ≥50 ≥60 ≥60 1100 ℃ * 3h firing line after the rate change -1.0-0.1 -0.50-0.10 -0.50-0.30 -0.50-0.30 thermal conductivity (1000 ℃) Kcal / mh ℃ ≤0.5 ≤0.7 ≤0.7 ≤0.7