The National Standardization Technical Committee Plastic Pipe, Fittings and Valves Subcommittee has recently stated that seven new national standards for plastic pipes and fittings have been officially implemented.

The seven new national standards are: GB/T15819-2006 test method and technical requirements for environmental stress cracking sensitivity caused by plugged pipe fittings for polyethylene (PE) pipe for irrigation; GB/T5836.1-2006 HARD concrete for building drainage Vinyl chloride (PVC-U) pipe; GB/T5836.2-2006 hard polyvinyl chloride (PVC-U) pipe fittings for building drainage;

GB/T10002.1-2006 water-based hard polyvinyl chloride (PVC-U) pipe; GB/T20201-2006 irrigation polyethylene (PE) pressure pipe mechanical connection pipe;

GB/T20207.1-2006 Acrylonitrile-butadiene-styrene (ABS) pressure piping system Part 1: Pipe; GB/T20207.2-2006 Acrylonitrile-butadiene-styrene (ABS) pressure piping system Part 1: Pipe fittings.

According to reports, the national standards issued this time are based on the international standard system (revision), and some of the content has been revised according to changes in material technology, pipe processing technology and environmental protection requirements at home and abroad.

Among them, the main technical contents of the revision of PVC-U pipe national standard for water supply include: increasing the requirement for resin K value, prohibiting the use of lead salt stabilizer, improving the impact energy of drop weight impact test, and partially adopting relevant foreign advanced standards. Technical indicators, adjusted the ring stress of hydraulic test, increased system suitability test and size grouping and stereotype inspection; PVC-U pipe and pipe fittings for building drainage, the specification is expanded from 40~160mm to 32~250mm, and municipal drainage The pipe size is different. The pipe connection increases the connection mode of the sealing ring, eliminates the classification of superior products and qualified products, and increases the size requirements of the pipe and pipe fittings.

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