1.Forged drum shaft 2.vacuum degassed, forged, heat treated, finish machined. 3.weight:< 60000Kg,diameter:<4m, ... chemical testing centers for free forging, die forging, material preparation, machining, and heat treatment. Shanghai ZENT Industrial Co., Ltd specializes in ... fiber heat treatment furncaces, 63 sets of many kinds of machining equipments. Also there are testers such as computer-controlled ...