... concrete surfaces without rework 4:save cost Pengcheng Wooden Construction Circular Column Formwork SystemIntroductiontwo piece of semi-circle ... it.Usageconcrete forming of circular columns or pillars in construction.Specification Diameter(mm)Thickness(mm)Height(m)Pieces200- ... lower percent of passCostmade from film faced plywood, short construction period, don't need hoisting equipment, economical and ...