METHOD FOR ASSEMBLY OF CYLINDRICAL WELDED TANKS IN SITU IN HORIZONTAL POSITION

摘要

A method of and apparatus for assemblng a cylindrical container, such as large cylindrical vessels, in horizontal end use position such as pressure vessels supported within a marine vessel hull. By positioning stepwise a plurality of rings in horizontal end to end relatqon on roller supports and rotating the rings while welding them, a cylindrical vessel of predetermined length and size may be formed. Control means synchronize the rotation of the cylindrical rings with the welding operation to assure a continuous weld of proper depth to connect the cylindrical sections together.