... Crane Safety Regulations>> and other standards designed to strengthen the type of tower cranes, lifting the rated torque 63t m, the ... , it has a fixed, walking, attachment, etc. within the climbing type, to meet the city high-rise buildings, industrial plants, power ... but no ballastType C.“#”Cross Beam without heavy objectType D. Mobile Chassis Type A. Cross-shaped beam with slanting strut and ballast ...