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由国家计委地质局组织有关单位试制的塑料井管和滤水管,经1970年先后进行九眼深机井(最深井为320米)的试验证明,聚氯乙烯塑料井管和滤水管的强度能够满足水文地质钻孔和工、农业供水机井使用要求,可以代替钢管和铸铁管,而且还比钢管和铸铁管质量高、寿命长、造价低、重量轻,施工方便。于1973年9月在天津通过了鉴定。聚氯乙烯塑料井管含有少量铅(有毒性),但经过对北京地区已使用二、三年的塑料井管水质分析测定,井水含铅量为0.01毫克/升,小于国家饮用水卫生规定标准0.1毫克/升。对有害毒物的观测分析工作有关部门还在继续进行。
The State Planning Commission Bureau of Geology organized by the relevant units of the trial production of plastic wells and drainage pipes, 1970 has nine deep wells (the deepest 320 meters) test proved that the strength of polyvinyl chloride plastic wells and drainage pipes can To meet the hydrogeological drilling and industrial, agricultural water supply wells use requirements, can replace steel and cast iron pipe, but also than steel and cast iron pipe, high quality, long life, low cost, light weight, easy construction. In September 1973 in Tianjin passed the appraisal. PVC plastic well tube contains a small amount of lead (toxic), but after Beijing has been used for two or three years of plastic well tube water quality analysis determined that the well water lead content of 0.01 mg / L, less than the national drinking water health regulations Standard 0.1 mg / l. The relevant departments of the observational and analytical work on harmful toxins are still going on.