The hottest spot check of plastic pipes and pipe f

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Guangdong Provincial Bureau of Quality Supervision recently announced the results of special supervision and spot check on the quality of plastic pipes and fittings in Guangdong Province in 2015. The discovery rate of unqualified products was 4.3%

117 batches of products produced by 55 enterprises in 14 cities, including Guangzhou, Shenzhen, Shantou, Foshan, Huizhou, Shanwei, Dongguan, Jiangmen, Zhaoqing, Qingyuan, Jieyang, Shaoguan, Zhuhai, and Zhongshan, with the same accuracy, were spot checked according to gb/t10002 Unplasticized polyvinyl chloride (PVC-U) pipes for water supply, gb/t10002 Unplasticized polyvinyl chloride (PVC-U) pipe fittings for water supply, gb/t5836 Unplasticized polyvinyl chloride (PVC-U) pipes for building drainage, gb/t5836 Unplasticized polyvinyl chloride (PVC-U) pipe fittings for building drainage, JG insulating electrical sleeve and accessories for building, yd/t841 Plastic pipes for underground communication pipelines Part 2: solid wall pipes, gb/t18742 Polypropylene piping systems for cold and hot water - Part 2: pipes, gb/t18742 Polypropylene piping system for cold and hot water part 2: pipe fittings. The service life of rubber parts of rolling stock is mainly verified by the experiments of structural parts on the single axle or multi axle rubber parts message stiffness testing machine. These materials not only reduce the weight of the train, but also indicate the quality indicators and requirements in the current effective enterprise standards or products that have been put on record. For the opacity, density, Vicat softening temperature, longitudinal shrinkage 21 items including drop weight impact test, hydraulic test, hygienic performance, tensile yield strength, compressive performance, impact performance, bending performance, bending performance, falling performance, heat resistance, flame retardant performance, electrical performance, flat test, ring stiffness, recovery rate, oven test and fracture elongation rate shall be inspected

this spot check found that five batches of products were unqualified, involving tensile yield strength, density, oven test, longitudinal shrinkage, Vicat softening temperature and other items

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