Виды полипропиленовых труб: характеристики и ... - valtec.ru
: An earlier national standard that remains relevant for defining service life parameters and hydrostatic strength. gost na polipropilenovye truby
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 effective as of 2026