| 摘要 |
PROBLEM TO BE SOLVED: To provide a chemical tank built by welding to assemble a plurality of members, which is suppressed in manufacturing cost and deformation of the members when welding.SOLUTION: A large chemical tank includes a body member, which has a cylindrical trunk part for storing chemicals therein and a semicircular bottom plate joined by welding to each other, and a pipe member that injects and discharges the chemicals. Either one of ferritic stainless steel containing Cu and Nb each at 0.1 mass% or larger, and ferritic stainless steel containing Mo at 0.3 mass% or larger and Nb at 0.1 mass% or larger is used for the material for the tank. |
