Plastic pipe fittings, in particular bow and branch moulding for pipe systems in wastewater domestic installations

摘要

A novel plastic tubular section is especially suitable for making bend- and branching fittings for the pipework of domestic waste water installations. What is new is the partial external ridging (2). This is located especially in the internal water-impact regions. Preferably the ridging is on the outside of bends. The material used is a polyethylene with barium sulphate filler.