China 'GB/T 778.1-2007
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 778.1-2007
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
Issued Date:2007-11-14
Implemented Date:2008-05-01
Issued by:
The Standardization Administration of the People's Republic of China