Generally speaking, the volume density for insulation brick between 0.4-1.5 g/cm3, porosity is from 66% to 73%, compressive strength is 1.5-8.1 MPa and thermal conductivity rate is 0.291-0.582 W / (Mk) (350 ℃ ).
Insulation brick is used in high temperature insulation layer of furnace that has high refractoriness and good thermal shock resistance.

Item	Index
Item	NG- 1.5	NG- 1.3a	NG- 1.3b	NG- 1.0	NG- 0.9	NG- 0.8	NG- 0.7	NG- 0.6	NG- 0.5	NG -0.4
Bulk density g/cm3,≤	1.5	1.3	1.3	1.0	0.9	0.8	0.7	0.6	0.5	0.4
Compress strength MPa	≥5.9	≥4.4	≥3.9	≥2.9	≥2.5	≥2. 5	≥2.0	≥1.5	≥1.2	≥1.0
Testing temperature when reheated with 2% contracting rate ℃	1400	1400	1350	1350	1300	1250	1250	1200	1150	1150
Thermal conductivity , W/m·K（350℃±25℃）	≤0.7	≤0.6	≤0.6	≤0.5	≤0.4	≤0.35	≤0.35	≤0.25	≤0.25	≤0.2

Insulation brick packing
Insulation bricks are packed in carton that put on wooden pallet and then polyethylene film is placed over it, finally the package is tied up with plastic strips.10 piece in one carton, 48 carton on one pallet and 24 pallet in one 20 feet container for 230m*114mm*65mm size bricks
Insulation brick minimum order
48 carton for standard size as minimum order is accepted and 10 containers can be supplied per month.
Insulation brick delivery time
45 days after receiving the L/C or 30% payment in advance.