index item	silica brick for coke oven
	LJG-94	LJG-95
SiO2%   ≥	94	95
AL2O3%   ≥	1.2	1.0
Fe2O3%  ≤	1.3	1.2
0.2MPa refractoriness under load 0C ≥	1650	1650
Linear change after heating % (14500C×2h)	+0.2	+0.2
class 1 apparent porosity% ≤ class2	22	22
	24	24
cold crushing strength MPa ≥	30	35
true density g/cm3 ≤	2.34	2.33 2.34
thermal expansion(10000C)% ≤	1.28	1.30

ZIBO XINDI REFRACTORY MATERIAL CO., LTD, was established in 1993 and is situated in Zibo, Shandong, China. We are a specialized manufacturer of refractory and heat insulation with more than 15 years' history. Now it has 20,000 sqm floor area and can produce 30,000 tons of more than 10 kinds of medium and top grade refractory and heat insulation material annually. We have 4 large produce lines. Both R&D Center for technology and Testing center for chemical and physical properties are established. Our main products including refractory castable & mortar, ceramic fiber products, refractory bricks, silicon carbide, calcium silicate bord, etc. Presently our ceramic fiber products and heat insulation brick are occupying the leading status in the same line. With the rich knowledge, complete quality system and good check up ways, the quality of our products is very reliable. Based on those, we passed the ISO9001 certificate and many products have got approval by domestic and abroad customer. Our products have been exported to Korea, India, Japan, Germany, Egypt, etc.