Cot PEHD Rainplus 125/88° Cot PEHD Rainplus 125/88° is a type of plastic pipe made from high-density polyethylene (HDPE) that is used for water supply systems. It is a durable and reliable type of plastic pipe that is resistant to corrosion, chemicals, and extreme temperatures. It is also lightweight, flexible, and easy to install. This type of pipe is also used for drainage and sewerage systems, as well as for chemical and industrial applications.