Tower Crane Mast Section/Anchor

Mast section is composed of standard joints which are formed by group welded of angle steels with the structure of long square space trusses.
Every two standard joints of tower body are connected firmly by Level 10.9 M27 high-strength bolts and screws. Inside each standard joint there is a ladder with the same length so as to facilitate manipulation and maintenance personnel getting on and off tower crane.
There is one rest platform every three joints. All standard joints have interchangeability. By changing the number of tower body standard joints installed, the crane will reach different lifting heights.
Two groovy footsteps are welded respectively on two main chords on the same side of standard joints. This position of main chords has been strengthened.
While doing jack-up work, with the expansion of jack-up cylinder, shaft heads at two ends of jack-up beams and climbing claws of jack-up set frame fall into the footstep groove successively according to the procedure, so as to make jack-up set frame elevate vertically along with tower body.

Automatic impeller blasting and spraying assembly line；
The company adopts the world first-class automatic spraying assembly line；
The large structure parts are dealt with  impeller blasting before spraying；
That effectively removes steel surface oxides and welding spatters, eliminates the internal stress in welding process, increases the parts' anti-fatigue strength
and steel surface hardness, and increases painting adhesion；
so that it prolongs the service life of the product, maximizes efficiency, and saves energy.