Plastics piping systems for hot and cold water installations - Polybutylene (PB) - Part 1: General (ISO 15876-1:2003 + Amd 1:2007) (consolidated version)
District heating pipes - Pre-insulated flexible pipe systems - Part 3: Non bonded system with plastic service pipes - Requirements and test methods; German and English version EN 15632-3:2010— 19 стр.
District heating pipes - Pre-insulated flexible pipe systems - Part 2: Bonded plastic service pipes - Requirements and test methods; German and English version EN 15632-2:2010— 23 стр.
