... 45 kgs and 2 or 3workers can install it well by hands. If to use steel formwork in the same size, it have ... don't need hoisting equipment, economical and practicalmade from steel plates, operation by hoisting equipment, expensivemade from PVC, cheaphigh labor ... 800mm, 900mm, and 1200mm, different heights from 3m to 6m, 800 circular columns in totally.Through our PENGCHENG formwork, it only takes ...