Announcement of Ministry of Housing and Urban-Rural Development of the People's Republic of China

No.633

Announcement on Issuing the National Standard of Code for Investigation and Surveying of 330kV-750kV Overhead Transmission Line

The Code for Investigation and Surveying of 330kV-750kV Overhead Transmission Line is hereby approved as a Chinese national standard bearing a serial number of GB 50548—2010，and will come into effect on December 1，2010.

Articles 1.0.4，3.3.2，3.4.6，12.1.1，12.2.1，and 12.5.1 are compulsory provisions and must be enforced strictly.

This code will be published and distributed by China Planning Press as authorized by Research Institute of Standards and Norms，Ministry of Housing and Urban-Rural Development of the People s Republic of China.

Ministry of Housing and Urban-Rural Development of the People s Republic of China

May 31，2010