... 3.OD:60-320mm I.Intro:Based on horizontal continuous casting for cast iron profile(dense bar),we've ... developed new casting tech ‘Vertical upward continuous casting’ in 2006, by using this tech we manufactured ... drillable bridge plug, suction vitta Railway vehicle bogie bush, braking system bushing Metallurgical equipmentcasting lift tube ,suction tube, thermocouple protect ...