To prevent heat losses from the steam pipe lines, the pipes are insulated. The pipe insulation cover is also known as lagging. The common insulating materials used are Asbestos sponge felt, Magnesia or asbestos hair and glass wool. The insulating efficiency of these materials is about 85%.The thickness of insulation varies from 2.5 cm to 7.5 cm depending upon the temperature of steam in the pipe. The higher the temperature, the larger is the thickness of insulating material. The insulation material should be able to withstand the pipe temperature and stand ordinary handling.
The insulation is securely bound to the pipe and the joints are closely fitted. The lagging over the pipelines is covered with a protective covering made up of aluminum or galvanized iron sheet. The pipe lines which are laid outdoor are required to be provided with water proofing.
The insulation is securely bound to the pipe and the joints are closely fitted. The lagging over the pipelines is covered with a protective covering made up of aluminum or galvanized iron sheet. The pipe lines which are laid outdoor are required to be provided with water proofing.
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