Hydrosilicate Calcium
Material widely used for thermal insulation of hot pipes.
Material specified in P.NB-141 and P.EB-221 standards, ABNT, and C345, ASTM.
Composition Mg-85%
Traditional use of materials in thermal insulation before the appearance of hydrosilicate Ca.
Materials specified in the C320 standard, ASTM.
Mineral wool (rock wool)
higher material cost, while they may be more economical due to lower thermal conductivity.
Flexible material and capable of absorbing large dilated tube.
Material not recommended for pipes subject to external loads.
Diatom silica
Material not recommended for pipes subject to external loads.
high cost of equipment and relatively high thermal conductivity, thus resulting in higher heat loss. It should therefore be used for temperatures above 650 ° C (above the limit other materials); Common for these cases is the use of thermal insulation in two layers, the inner layer diatomaceous silica, and external, of another material.
Glass wool
soft, flexible and lightweight material.
For use in low temperature vapor barrier is required.
Plastic foam (Expanded Polystyrene)
Material widely used for low temperature piping.
For use in low temperature vapor barrier is required.
Cork
For use in low temperature vapor barrier is required.
molded or granulated and sintered material.
Material good resistance to shock and vibration.
Asbestos
Employment for minor pipes or as a second layer to cover other insulating materials.
polyurethanes
For use in low temperature vapor barrier is required.
Materials (insulation Thermal) - Comments
For any job in stainless steel pipes of the insulation material should be free of chlorides.
attention is called to the handling of some insulating materials (glass wool, and especially asbestos, or compositions containing asbestos) is hazardous to health, posing a risk in contact with skin and especially the breath, so it is essential the proper safety precautions.
