EASTM CELULLAR GLASS PIPE SECTION AND SLAB
Foam glass (Cellular glass): Cellular glass takes glass dust as the basic material. Adds foaming agent and roasts into being through tunnel kiln. It is the best low-temperature heat-insulation material at present in the world markets. It is noted for its low unit weight, minor thermal conductivity, asti-moisture absorption, asti-comoustion, asti-mouldy, high mechanical strength, easy processing, resisting all chemical condest except by drogen fluoride, poisonless, stable chemical function, able to be used in a wide scope from extrealy low to high temperature. Its excellent heat-insulation property can be last for many years without any degenerating. More important is that celluar glass itself is fireproof and shockproof. When it is used under such bad situations as extreamly coldness, under-earth, open, easily fired, easily be damp and having chemical corrodent. It is not only safe but durable. It is be called "permanent heat-insulation material that not need be replaced" So it is widely used in oil chemistry, cold storehouse, under-earth project, ship-building, national defence and military project etc.
Properties			Physical Index
Item		Unit	EASTM	ASTM-C552-91
Density		kg/m³	Min 110	Min 107
			Max 145	Max 147
Maximum use temperature		℃	-270~+550	-268~+427
Thermal conductivity                                      W/m K  at  ℃		204	0.088	0.094
		149	0.073	0.078
		93	0.055	0.063
		38	0.049	0.052
		24	0.047	0.050
		10	0.045	0.048
		-18	0.041	0.044
		-46	0.037	0.040
		-73	0.032	0.037
		-101	0.027	0.035
Flexural strength		kpa	≥550	≥448
Compressive strength		kpa	>430	>414
Linear expansion coefficient:		Wm/m ℃	<8.1X10-6	<9X10-6
Moisture absorption rate		%	0.00
Water absorption rate per Volume		%	≤0.2
Standard size and packaging and Dimension tolerance
Class	Items	Sizes		Tolerances
Pipe section or slab	Length (mm)	1000, 610, 500,457,400,300		+3, -2
	Inside diameter (mm)	16---3560		+3, -2
	Thickness (mm)	25---180		+3, -2
Standard packaging	Polythene bags inside and Cardboard cartons outside