How to explain and classify the types of tower cranes? What do QTZ80 and Q5510 mean?
80 is lifting torque of 800 KN.M, 5510 is 55 meters, big arm of the front crane 1 tons
P---- represents flat head (without tower top), and T----- is tower crane,TC------ is the English abbreviation of tower crane, that is tower crane
This is only the tower crane in different periods of different naming:QTZ---- is the general saying in 80s of last century, Q means steel material (usually Q235), T is tower crane (mostly tower top type), Z indicates heightening method is self lifting,PT------ is the naming method in recent years.
