Rock wool lightly resin bonded mattresses (LRB) consists of fine fibers spun from selected rocks melted at high temperature and bonded with a thermosetting resin. They are Machine laid fiber lay pattern and are baked to form mattresses of predetermined density and thickness. Mattresses are then slit and stitched to specified dimensions . It has controlled thickness and density resulting in predictable heat losses. Rockwool mattresses manufactured from selected rocks to State of the Art Specification fully conform to national and international standards such as IS : 8183 - 1993 BS : 3958 Part - 3 ASTM:C592 - 80 APPLICATION Rockwool mattresses are used for Hot & Cold insulation to conserve energy It is used in the thermal insulation of large vessels, boilers, , equipment, ducts, flanges, valves and plants operating at high temperatures. SERVICE TEMPERATURE -50 to + 750 DEGREE CENTI GRADE