Weld seam opening regulator for cylindrical tank building process

摘要

A weld seam opening regulator for use in constricting cylindrical structures, including a frame, first and second wheels for riding on a first edge of a band of metal, a third wheel for riding on a first edge of a cylindrical portion of the structure, and a fourth wheel for riding on an inner surface of the cylindrical portion and maintaining a minimum weld spacing between the band and cylinder. Also, an adjustable bottom roller rides on a second edge of the metal band urges the metal band toward the cylindrical portion of the structure.