Main difference between insulating fire brick and refractory brick

Insulating Firebricks & Hard Firebricks

High Temperature Insulation: Firebricks are rated up to temperature of 2500 F, 1.25 Inch x 4.5 Inch x 9 Inch Low Thermal Conductivity, Low Heat

Insulating Fire Brick, 9 x 4.5 x 1.25, 2500F Rated, Set of 5 Fire Brick for Pizza Ovens, Wood Stoves, Kilns, Fireplaces, Forges, Jewelry Soldering

JM23 Insulation brick - Sijihuo Refractory JM23 Insulation brick

What's the differene between insulating bricks and refractory bricks?

Service Life of Refractory Bricks - China Refractory Brick

What is the difference between Low, Medium and High Duty Fire

내화벽돌 내화단열벽돌 내화세라믹튜브 세라믹슬리브 세라믹성형

Insulating Fire Bricks, 2500F Rated 2 inch x 4.5 inch x 9 Inches, Soft Fire Brick for Forge Jewelry Soldering Block Garden Pizza Oven Furnace Kiln

Light Weight Fire Brick High Alumina Lightweight Refractory Bricks

Refractory Insulating Bricks For Industrial Applications