Wall element, esp. for prodn. of high rise buildings
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Wall element
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Process and apparatus for the manufacture of large-size porous shaped bodies of low density by swelling
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Method of constructing pipeline systems on buildings as well as pipeline system for carrying it out
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Heat exchanger for drainage ducts
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Device for draining building floors
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Device for burning fuels containing water
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Electric motor drive
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HEAT EXCHANGER
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Composite pipe esp. for building drainage - has plastics tube helically wound and bonded intermediate layer and metal outer sheath with longitudinal seam
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Tool for seamless pipe elbow mfr. - has die in two halves, each contg. semicircular channel with straight zone and curved zone matching bend required
