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jing guan li qing sha jiang jie tou
Author(s): BIAN Si
Pages: 19
Year: 1979
Issue:
10
Journal: Farm Machinery
Keyword: 沥青砂浆; 水泥管; 井管; 分层取水; 毛面; 中细砂; 热沥青; 上管;
Abstract: <正>随着井灌事业的发展,对水泥管井或砖管井接头的质量提出了越来越高的要求.如:分层取水,安装无管泵,对口抽等,都要求井管接头牢固、不漏水、不漏气. 施工要求:1.水泥管接头要干燥、干净,并制成毛面;2.拌料用砂需清洁干燥;3.分别将沥青(冒黄烟)用砂(180℃左右)加热,按
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