... 1)Matching with all automatic welding equipments Hydraulic System for Automatic WeldingSuitable for industries of: OIL AND GAS, PETROCHEMICAL, ... Corp., CNPC Group, SINOPEC GroupWe provide complete solution for tank welding with different construction method, both bottom-to ... top-to-bottom tank construction, hydraulic lifting system are especially designed for top-to-bottom tank erection.Features:1 ...