: A code of rules for internal water supply and sewerage that sets the standard service life for PP-R pipes at 50 years for cold water. 2. Classification of Materials

The main standard for polypropylene (PP) pipes used in water supply and heating systems is . This interstate standard, effective as of 2026, establishes general technical specifications for thermoplastic pressure pipes and fittings. 1. Key Regulatory Documents

: The primary document for pressure pipes made from thermoplastics (PP, PE, PVC-U, etc.) used for cold/hot water and heating.