Cold water meter standards, a total of three parts, Measurment of water flow in closed conduits-Meters for cold potable water!

Packet : 21840314meters_for_cold_potable_water.rar filelist
GBT 778.1-1996 冷却水标 第1部分：规范GB-T778.1-1996.pdf
GB-T 778.2-1996 冷水水表 第2部分：安装要求.pdf
GB-T 778.3-1996 冷水水表 第3部分：试验方法和试验设备.pdf

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