METHOD FOR MANUFACTURING TANK, END PLATE FOR TANK AND TANK

To suppress corrosion and concentration of stress due to a gap inside a tank (1) and weld an end plate (20) to a barrel (10) with a correct position relationship, in a tank (1) in which a barrel (10) and an end plate (20) are joined by welding.SOLUTION: A method for manufacturing a tank (1) performs: an abutment step of forming a recess part (31) and a projection part (32) projecting outward relative to a barrel (10) at an end part (21) of an end plate (20) and causing the end part (21) of the end plate (20) to abut on an end part (11) of the barrel (10); and a joining step of welding the abutment part between the end plate (20) and the barrel (10), in this order.SELECTED DRAWING: Figure 4 【課題】胴体（10）と鏡板（20）が溶接で接合されるタンク（1）において、タンク（1）の内部の隙間に起因する腐食や応力集中を抑制するとともに、鏡板（20）と胴体（10）を正しい位置関係で溶接する。【解決手段】鏡板（20）の端部（21）に凹部（31）と胴体（10）よりも外方へ突出する突出部（32）とを形成し、鏡板（20）の端部（21）と胴体（10）の端部（11）を突き当てる突き当て工程と、鏡板（20）と胴体（10）を突き当てた部分を溶接する接合工程とを順に行ってタンク（1）を製造する。【選択図】図４