Bygging's hydraulic tank jacking equipment builds field-erected storage tanks from the top down. The roof and top shell course are assembled first, then lifted step by step while each new course is added below. All welding, plate alignment and inspection happen at ground level, which improves safety and weld quality, reduces manpower and removes the need for tall boom cranes or heavy scaffolding. The equipment is also used to add shell courses, dismantle old tanks and repair tank bottoms. Used on 7000+ tanks in 97+ countries.