730/400 Thin Coal Seam of Typeses Pare off Plank to Transport Machine to Decelerate Machine Conjunction Ear to Weld and Repair Craft

Pass right 730/400 thin coal seam of typeses that machines that planks pare off machine hulls transport weldings decelerate the cast-iron spare parts of suffer the dint circumstance to analyze to weld the sex analysis with material.Introduce the spheroid graphite the cast-iron spare parts to repair the craft,and increase the valid craft measure to weld the strength-to plant the screw to weld the method.