... 270-480It is huge size & weight of mill housing specially in Roll mill field,need steel casting and machining. Mill housing ... casting and machining,plus our supplying history of various components in metallurgy, marine, mining , chemical, petrochemical,cement and other heavy industry. ... . Ultrasonic Inspection Testing Standard: ASTM A609,EN 12680,SEP 1922(IN 1690-T2) Roll mill housing