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轻工部、水利部委托塑料喷灌设备全国联合设计组组长吉林省二轻局主持,于1980年7月在吉林省海龙县召开了塑料喷灌设备全国技术鉴定会。会议代表听取了设计组研究工作总结报告,到海龙县塑料厂观看了整套设备的拆装和管道一次连接运转可靠性表演。在现场,表演了管道偏转运行和6英寸1330聚丙烯管高达10米以上的抛掷试验。代表审查了设计组提供的 PYS15、PYS15A、PYS20、PYS20A 两档四种规格塑料喷头,(?)60毫米
Ministry of Light Industry, Ministry of Water Resources commissioned the plastic sprinkler equipment joint design team leader presided over the two ministries in Jilin Province, in July 1980 in Helong County, Jilin Province held a plastic sprinkler equipment National Technical Appraisal. The delegates listened to the summary report of the design team research work, and went to Hailong County Plastic Factory to watch the assembly and disassembly of the complete set of equipment and the reliability performance of the pipeline once connected. At the scene, a plunge test of pipe deflection and 6-inch 1330 polypropylene pipe up to 10 meters was performed. The representative reviewed the PYS15, PYS15A, PYS20 and PYS20A two-stage four-type plastic spray heads provided by the design team, (?) 60mm