For the past two years, an 18-tonne (39,683.2 lb) version of the 21CM335 tower crane has been in operation on the construction of the Huaye information Software Industrialization base, located close to the premises of the Alibaba group, in HangZhou city, China.
At almost 200 metres (656,168 feet) high, this office building located in HangZhou high-tech business zone boasts 43 floors.
A 21CM335 tower crane was selected to meet the project requirements, one of Comansa´s most popular tower crane models thanks to a wide variety of mechanisms allowing it to work at high speeds and on very tall projects.
Key points:
- The external climbing system was used to mount the crane, which has a tower height of 210 metres (688.98 feet) with a 74-metre (242.78 feet) reach radius.
- This model of flat-top tower crane has been upgraded to a maximum capacity of 20 tonnes (44,092.5 lb) with a tip load capacity of 2,700 kilograms (5,952.481 lb) or 2,970 kilograms (6,547.73 lb) with PowerLift.
- Comansa, which also has a headquarters in China, offers a wide variety of options beyond the standard lifting mechanisms, such as the ultra-high lifting cable capacity drums that enable this crane to work at high speeds and on very tall projects including this skyscraper. In this case, a 50-kW mechanism was used, with 790 metres of cable capacity.
- COMANSA’s China factory not only supplied the crane, but also provides maintenance and servicing.
Opening date: Aug., 2021
Construction company: Zhejiang Zhongnan Construction Group
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