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(一)推广应用塑料深井管及滤水管的意义随着我国工农业的迅速发展,黑色金属及有色金属的需用量与日俱增。近几年来,广大干部、工人和技术人员在毛主席革命路线指引下,发扬“自力更生”“艰苦奋斗”的革命精神,结合我国资源,广泛研究各种非金属材料的代用问题,节省了大量贵重有色金属和黑色金属,其中硬质聚氯乙烯塑料管发展尤为迅速,它不仅能耐大部份酸碱的腐蚀,而且还具有一定的机械强度;同时它的比重轻,加工成型方便,原料来源丰富,价格低廉,因此硬聚氯乙烯管的应用是非常值得注意的方向之一。
(1) Significance of Popularizing Plastic Deep Well Pipes and Water Filter Pipes With the rapid development of industry and agriculture in China, the demand for ferrous metals and non-ferrous metals is increasing day by day. In recent years, a large number of cadres, workers, and technical personnel have carried forward the revolutionary spirit of “self-reliance” and “hard work and struggle” under the guidance of Chairman Mao’s revolutionary line, and in conjunction with China’s resources have extensively studied the problems of substitution of various non-metallic materials. Save a lot of precious non-ferrous metals and ferrous metals, of which rigid PVC plastic pipe is particularly rapid development, it can not only resist most of the acid-base corrosion, but also has a certain degree of mechanical strength; at the same time, its light weight, convenient processing and molding , Raw material sources are abundant, and the price is low, so the application of hard polyvinyl chloride tubes is one of the most noteworthy directions.