... shaft4.42CrMo4,BS970 709M40,34CrNiMo6,BS970 826M40 5. Forged spindle of winder power stationWe Shanghai ZENT Industrial Co., ... capability of producing 50,000 tons of free forging, ring forging and die forging annually.Our company own workshops and physical ... & chemical testing centers for free forging, die forging, material preparation, machining, and heat treatment. Shanghai ...