Tower crane QTZ80 G8 includes QTZ5512 type and QTZ5017 type 

Please see following main parameters for your reference. 

Jib length (m): 55/50 
Tip load: 1.2t/1.7t 
Max load: 8t 
Free standing height: 40.5m 

This kind of tower crane has excellent performance and be equipped with complete safety device, easy to install and disassemble. It has three working types, including stationery, travelling and climbing type. 

If you are interested in, please contact me for more details, thanks. Any inquiry will be replied to you within two working days.