METALLIC LONG-SIZED PIPE HAVING TIP CLOSED PART ENCLOSED TIGHTLY AND ITS MANUFACTURE

摘要

PURPOSE:To enclose tightly the tip closed member which is formed by drawing press work and realize the method which has superior productivity and suits to automation by welding the opening part of the tip closed member to one end opening part of a long-sized pipe body 1. CONSTITUTION:The tip closed member 1 is formed by drawing press work and the opening part 3 of the closed member 11 is welded to one end opening part 2 of the long-sized pipe body 4. Thus, the tip closed part is enclosed tightly to realize the manufacturing method which has superior productivity and suits to automation.