Can the tower crane be filled with concrete pump tube?
(6) buried in the underground material are not allowed to hang; (7) safety device failure or sickness are not allowed to suspend; (8) live light dark can not see hanging objects up and down
(9) ribs and wire rope direct contact without protection measures are not allowed to hang; (10) six or more strong winds are not allowed to hang.
(3) the weight of the hanging material is not clear or overload is not allowed to be suspended; (4) the bulk of the bundle is not strong or the material is not full of loading and unloading; (2)
