| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress a crack when falling or a production cost, in a large-size tank for a chemical liquid assembled by joining a plurality of members.SOLUTION: A large-size tank for a chemical liquid has a body member in which a bottom plate and a lid are joined to a cylindrical body part. The joining between the cylindrical body part and the bottom plate is performed by wind-fastening such that the joining has an outward curl shape in the downmost end of the cylindrical body part. The joining between the cylindrical body part and the lid can be also performed by wind-fastening such that the joining has an outward curl shape. The large-size tank can include a pipe member for injecting/discharging the chemical liquid, and the large-size tank can use a ferritic stainless steel containing 0.3 mass% or greater of Mo and 0.1 mass% or greater of Nb, or added with 0.1 mass% or greater of each of Cu and Nb, as their materials.</p> |
