... steel, stainless steel. The pressure vessels, columns, reactors, towers, heat exchangers, condensers, storage tanks, refrigerated storage tanks, lining equipments, extractors ... 1.Grade III of Designing and Manufacturing License of Pressure Vessel P.R. of China; 2.Manufacturing License of Nuclear ... only as per the drawings of the clients. Pressured Vessel, Boiler Pressure Component & Heat Exchanger