Wondering how precision dished heads are made for pressure vessels and cryogenic equipment? This factory tour takes you inside Henan Guojiang's 30,000 m² production facility in China's 'Head Capital' to see ASME-certified joggled-edge dished heads in SA-240M stainless steel being formed, cut, polished, and inspected. Watch the full manufacturing process — from hydraulic pressing and spinning to NDT and pickling — and learn how flatness within 3mm and surface roughness of 0.4μm are achieved for medical, food, and new energy applications.