Single or two=part drainage pipe - has pipe neck holes covered by stable broad fins

摘要

The drainage pipe for buildings, fleet, field, and surface draining, has inlet holes (1) which taper conically downwards from the centre line of the drainpipe (2) and which are covered by stable, broad fins (3), which are arranged along the drain pipe in the ratio 1:1.5. The bottom part of the two-part drainage pipe (2) has a straight (4) and formed sleeve half (5), between which are inlets (1) which taper downwards conically. The pipe is pref. made out of plastics or clay.