Mechanical design, manufacture, re-rating, alteration and repair of pressure vessels. Stamp “U”, “U2” from ASME and “R” from National Board Inspection Code. Mechanical design, manufacture, retubing and repair of tube and shell heat exchangers with ASME stamp, under TEMA standard and others. Mechanical design, manufacture, and repair of storage tanks under API standards. Fixed and floating roofs. Special pressure vessels for the petrochemical, petroleum, oil, chemical, agrochemical and agricultural industries. Low, medium and high pressure pipes according to ASME B31 code and other standards. Surface treatments and special coatings. Special welds. Metallic structures. Engineering for design and manufacturing