... , KP4, KP4M, HMD middle and advanced steels for mould industry.2. Specification:Major size of forging as below( mm)a. forging ... thickness<200, L:300—2000, Max weight:4.5tc. forging ring: D:600—3500,H:100—500, Max weight: 4.2td. forging rectangles: L:100 ... ,and electric power cost is less than 0.05USD/unit;2)Gas Cost:We are in northwest oil&gas field of ...