VALVES: HOW TO PRODUCE IN A COMPETITIVE WAY
I am talking about STEEL and CAST IRON VALVES, where until today the traditional manufacturing process has been split into two phases:
1. TURNING
2. MILLING/DRILLING
I have visited companies where the first phase was usually carried out on a horizontal lathe for small valves or on a vertical lathe for larger ones. The valves then moved to a machining center of varying size,