Tower Crane Mast Section Ladder 1. Introduction of Tower Crane Mast Section Ladder Tower crane mast section ladder and platform is galvanized type, waterproof, and rust-proof. Usually the size of mast section ladder of BQ tower crane is 350mm*3m, but BQ could provide the other special size of crane mast section ladder based on customer's requirement. 2. Product Information of Tower Crane Mast Section Ladder Product name: tower crane Ladder for mast section Size: 350mm*3m Material: Q345B Surface Treatment: galvanized 3. Product Photo of Ladder for Tower Crane Masts