Implementation of seven new national standards for plastic pipe fittingsSource： Date:2013-5-19
The National Technical Committee for Plastic Pipes, Fittings and Valves of the National Technical Committee for Standardization said recently that seven new national standards for plastic pipes and fittings have been formally implemented.
The seven new national standards are: GB / T15819-2006 Irrigation polyethylene (PE) pipe test methods and technical requirements for environmental stress cracking sensitivity caused by plug-in fittings; GB / T5836.1-2006 Vinyl chloride (PVC-U) pipes; GB / T5836.2-2006 rigid polyvinyl chloride (PVC-U) pipe fittings for building drainage; GB / T10002.1-2006 rigid polyvinyl chloride (PVC-U) pipes for water supply; GB / T20201-2006 Polyethylene (PE) pressure pipe mechanical connection fittings for irrigation; GB / T20207.1-2006 acrylonitrile-butadiene-styrene (ABS) pressure piping system Part 1: Pipes; GB / T20207. 2-2006 Acrylonitrile-butadiene-styrene (ABS) pressure piping systems. Part 1: Fittings.
According to the introduction, the national standards issued this time are formulated with reference to international standards (revision), and some contents have been revised in accordance with changes in domestic and foreign material technology, pipe processing technology and environmental protection requirements. Among them, the main technical contents of the national standard revision of PVC-U pipes for water supply are: increased requirements for the K value of resins, prohibiting the use of lead salt stabilizers, increasing the impact energy of the drop weight impact test, and partially adopting advanced foreign standards. Technical indicators, adjusted the ring stress of the hydraulic test, increased the system suitability test, size grouping, and type inspection; etc .; the national standard of PVC-U pipes and fittings for building drainage, the specification has been expanded from 40 ~ 160mm to 32 ~ 250mm, and municipal drainage There is a difference in the size of the pipe. The connection method of the sealing ring has been added to the pipe connection. The classification of superior and qualified products has been eliminated, and the size requirements of the pipe and pipe socket have been increased.