Pertile is an acidic volcanic glass with pearl structure. After heating, it can expand to 12-15times, It possesses the characteristics of very light, thermal insulation,sound insulation, strong ab-sorption etc--- It is used in such industries as new build-ing materials, petroleum chemistry, metallurgy, casting, agriculture, food filter, and environment protection.

Chemical elements

Element	S1O2	At2O3	Fe2O3	CaO	MgO	K2O	Na2O
Content	73.4	13,47	1.24	2.49	0.19	3.SS	3.05

EASTM EXPANDED PERLITE PIPE AND BOARD
Technical Data Sheet
Properties		Physical Index
Item	Unit	EASTM	ASTM-C610-95
Density	kg/m³	Min 196	Min 192
		Max 220	Max 224
Use temperature	℃	15~+650	27~+649
Thermal conductivity,                                           W/m/ K, max	93℃	0.072	0.079
	149℃	0.079	0.086
	204℃	0.081	0.095
	260℃	0.093	0.106
	316℃	0.103	0.111
	371℃	0.116	0.126
Flexural strength, min	kPa	320	310
Compressive strength at 5%, deformation, min	kPa	423	414
Weight Loss by Tumbling, % loss in wieght after 10 minutes	max	60	70
Moisture content, % by weight	max	5	10
Water absorption rate, % by weight	max	2	-
Linear Shrinkage, % at 649℃ for 24 h, max	length	1.8	2
	width	1.8	2
	thickness	8	8
Surface burning characteristics
Flame spread	max	0	0
Smoke developed	max	5	5

EASTM EXPANDED PERLITE POWDER
Technical Data Sheet
Properties		Physical Index
Item	Unit	EASTM-1	ASTM-C549-81
Density	kg/m³	Min 48	Min 32
		Max 80	Max 176
Use temperature	℃	-300~+800	-273~+796
Thermal resistance for 1-in. thickness                                           m2 K/W  at ℃                                                density: (32-65.6) kg/m3	4	0.78-0.69	0.78-0.69
	24	0.65-0.58	0.65-0.58
	41	0.65-0.56	0.65-0.56
Grading                                                         grading 1.2 mm  sieve-  max. retained by weight	%	10	---
Grading                                                         grading 0.15 mm  sieve-  min. retained by weight	%	65	---
Organic content, by weight, max.	%	0.1	---
Small-scale fire test		No sparking or ignition	No sparking or ignition
Combustibility (by test method E 136)		Noncombustible	Noncombustible
Moisture absorption, weight %/14 days, max	%	0.50	1.00
Chemical composition: %	SiO2	72-76	---
	Al2O3	13-17
	Fe2O3, CaO	0.2-1.5
	K2O	3.5-5.5
	Na2O	2-4.5