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jing guan li qing sha jiang jie tou
Author(s): 
Pages: 19
Year: 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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