Russian steel maker Metalloinvest’s Oskol Electrometallurgical Plant is installation equipment for monitoring internal and surface defects and straightening hot-rolled round and square steel began in section rolling shop No 1 with investments of more than RUB 1.5 billion. Straightening lines will ensure the straightness of rolled products with an accuracy of 1mm per linear meter, which is a mandatory requirement on the part of customers for high quality Special Bar Quality.The control unit detects internal defects from 1mm in size and surface defects with a depth of 0.2mm and a length of 10mm. Control accuracy more than doubles. Detected surface defects are removed on an abrasive machine.SBQ is used in the automotive industry, mechanical engineering, shipbuilding. Connecting rods, camshafts and crankshafts of internal combustion engines, gear wheels, shafts and gear shafts of gearboxes, steering parts, thrust, struts and springs of shock absorbers and other critical parts are made from it.