Mufa PEHD Rainplus 56 PEHD Rainplus 56 is a type of polyethylene (PE) pipe made by Rainplus, a leading manufacturer of plastic pipes and fittings. This type of pipe is designed to withstand harsh weather conditions, including cold temperatures, and is resistant to corrosion and abrasion. It is suitable for a wide range of applications, including irrigation systems, plumbing, gas distribution, and wastewater systems. PEHD Rainplus 56 is available in a variety of sizes and lengths and is easy to install and maintain.