Furthermore, the use of a foamed plastics material for forming the pipeline renders additional encasing of the pipeline with a suitable insulation material to reduce thermal losses dispensable as the foamed plastics material assumes the function of {TAIL ~ thermal insulation} in {HEAD ~ addition} to the air conduction function 
Furthermore , the use of a foamed plastics material for forming the pipeline renders additional encasing of the pipeline with a suitable insulation material to reduce thermal losses dispensable as the foamed plastics material assumes the function of { TAIL ~ thermal insulation } in { HEAD ~ addition } to the air conduction function
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