When the overweight steel members are hoisted at high altitude, large internal-climbingtowercrane must be adopted.
超高空吊装超重钢构件，需要大型的内爬式塔式起重机。
2
The height of the building is 154m. During the construction, K50/70 external climbingtowercrane and ZSC800 internal climbingtowercrane are used.
结合工程实际情况， 采用K50/70外爬式塔吊和ZSC800内爬式塔吊进行吊装施工。
3
The safety of towercrane is very important during construction, and the internal climbingtowercrane has been widely adopted to high-rise structure construction.