This atlas is a standard drawing for the design of the tower circumference and tower top platform of tower equipment. It is suitable for tower equipment with an outer diameter (OD) of 800mm-11000mm, with or without insulation.
HG/T 21543-2009 history
2009HG/T 21543-2009 General diagram of circular tower platform
1970HG/T 21543-1992 General diagram of circular tower platform