1CS83.140.30G33b中华人民共和国城镇建设行业标准CJ/T493-2016给水用高性能硬聚氯乙烯管材及连接件High performance unplasticized poly(vinyl chloride)pipes and fittingsfor water supply2016-06-14发布2016-12-01实施中华人民共和国住房和城乡建设部发布
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