L68B3 Mast SectionWhat are the quality problems of the tower crane that are easy to cause accidents?
There are many causes of tower crane accidents, and the quality problem of tower crane itself is one of the main reasons.the following quality problems of tower crane which are easy to cause tower crane accidents according to the causes of previous accidents?
L68B3 Mast Section：
http://www.towercranesupply.com/product/l68b3-mast-section-for-tower-crane-masts
Design problems: there are defects in the design of moment limiter, poor sensitivity; unreasonable stress in the design of steel structure, defects in the design of hydraulic system, etc.
Parts problems: quality problems of moment limiter components, steel materials used in steel structure, quality problems of hydraulic system components, etc.
L68B3 Mast Section：
http://www.towercranesupply.com/product/l68b3-mast-section-for-tower-crane-masts
Manufacturing problem: the welding of steel structure fails to meet the requirements. The height of the weld is not enough, and there are defects such as porosity, slag inclusion and even faulty welding, especially the welding quality problems in the important connecting parts of tower cap, tower crane arm, balance arm and other parts. The geometric dimension of steel structure does not conform to the requirements. The blanking is not in accordance with the requirements, and the cross-sectional dimension of steel fails to meet the national standards.
Problems of factory certificate and instruction manual: without factory certificate, it is a fake and inferior product. There is no batch description and no indication of changes to the original design.
L68B3 Mast Section：
http://www.towercranesupply.com/product/l68b3-mast-section-for-tower-crane-masts
