Product Standards The core national standard is the GB/T 28799 series of "Heat-resistant Polyethylene (PE-RT) Piping Systems for Hot and Cold Water". Among them, Part 2 "Pipes" (GB/T 28799.2-2020) was released on November 19, 2020 and implemented on June 1, 2021, replacing the 2012 version (GB/T 28799.2-2012), and adopts the international standard ISO 22391-2:2009, which is not equivalent. [9] Part 4 "Valves" (GB/T 28799.4-2024) was released on March 15, 2024 and implemented on October 1, 2024. [10] Industry standards include CJ/T 175-2002 "Heat-resistant Polyethylene (PE-RT) Piping Systems for Hot and Cold Water". Engineering Standards
Technical Specification for Polyethylene Piping Engineering for Building Water Supply CJJ/T98-2003, J279-2003.
Complete Book of Latest Technical Specifications for Design, Construction, Installation and Quality Acceptance of Building Water Supply and Drainage Engineering.
Installation of Plastic Water Supply Pipes SS405-1~4.
Raw Material Standards
Raw material standards include *Special Material for Heat-Resistant Polyethylene (PE-RT) for Hot and Cold Water Transmission Piping Systems* SH/T 1823-2019.
Testing Method Standards
Testing method standards include international standards such as ISO 9080:2012 (Determination of Long-Term Hydrostatic Strength), ISO 527-2:2012 (Determination of Tensile Properties), ISO 1133:2023 (Determination of Melt Flow Rate); and national standards such as GB/T 19466.6-2009 (Determination of Oxidation Induction Time).
International Standards
The international standards mainly refer to the ISO 22391 series (Plastic piping systems for hot and cold water - Heat-resistant polyethylene (PE-RT)).
