1.1 ,This specification covers the composition, dimensions, and physical properties of mineral fiber (rock, slag, or glass) metal mesh covered and industrial type blanket and blanket-type pipe insulation (typically on 24 in. (610 mm) diameters or larger)). Its use is for cooled surfaces at temperatures operating below ambient to 0°,F (−,18°,C) and on heated surfaces on expansion joints to large diameter vessels and tanks operating at temperatures up to 1200°,F (649°,C). Specific applications outside the actual use temperatures shall be agreed upon between the manufacturer and purchaser.