Smetal high quality hot blast stove refractory brick 1 High Purity:SiO2>95% 2 High RUL:T1,1670~1700 3 Super quality:A.P.<16% Smetal Smetal high quality hot blast stove refractory brick-We can supply super quality silica bricks A.P. <16%, C.C.S>50Mpa.-High Purity: SiO2>95%-High RUL: T1, 1670~1700-Low thermal expansion: <1.25(room temp-1000)-Low Residue quartz 0~0.5%.-Have experience to produce ...