Home / Standards / GB/T 778.1-2007 GB/T 778.1-2007 Abolished Measurement of water flow in fully charged closed conduits - Meters for cold potable water and hot water - Part 1: Specifications 封闭满管道中水流量的测量 饮用冷水水表和热水水表 第1部分:规范 Standard Type GBT ICS 91.140.60 CCS N12 Status 废止 Issue Date 2007-11-14 Implementation 2008-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A