Flow down is the term applied to the process by which product specifications agreed to by a supplier are communicated to any and all additional subcontractors used in manufacturing, treating or testing a product or component.
Like all steels,
microalloyed steels are iron-based metal alloys. Normally, they are plain
carbon or low-alloy steel with small additions of one of
three special elements. These steels were developed in the 1960s and used for
plate and pipeline applications. It was not until the 1980s, however, that
forgers began to produce microalloyed steel components in significant