purchase of castable refractory, accoset normal, fire tiles of boiler roof . , purchase of castable refractory, accoset normal, fire tiles of boiler roof: , accoset normal ace calderys ltd 25 kgs , fire tile for roof 460x310x60mm material as per is -8 specification with test certificate & having alumina minimum 38% , castable refractary ace calderya ltd 25 kgs , ceramic blanket 7100x610x25mm density 96 , symond / unifix make , fire tiles for tubes 300x300x75mm material as per is -8specification with test certificate & having alumina minimum 38% , fire brick spl for boiler 230mmx115mmx75mm (alumina minium 38 % to 40%)