thank you for your reponse,
For storage tanks wich are coated, there is no problem, the problem is specially for stack plant and sulfur furnace, these two vessels contain S02 and works on high temperature.
we have a project as shop fabricator of vessels and tanks for a new sulphuric acid plant in morocco, engineering was made by american company and the material of construction is the ASTM A36.
here in morocco we use E24-2 or S235JR (european steel)and there is many similar units constructed under...