2021GY/T 65-2021 Manufacturing technical conditions for radio and television steel tower masts
2010GY 65-2010 Technical conditions for the manufacture of radio and television steel masts
1989GY/T 65-1989 Technical conditions for manufacturing steel tower masts for broadcasting and television
GY/T 65-1989 Technical conditions for manufacturing steel tower masts for broadcasting and television was changed to GY 65-2010 Technical conditions for the manufacture of radio and television steel masts.