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Forged steel back-up roll is mainly used in 4 Hi and 6 Hi mills,The diameter of roll barrel can be 350mm-1600mm.The materials of back-up include 9Cr2Mo,86CrMoV7,70Cr3Mo and 45Cr5NiMoV etc.,MAIN TECHNICAL PARAMETERS
PRODUCT: BACK-UP ROLL
HARDNESS: 60-80HSD
DEPTH OF HARDNSS: 10-75mm
HARDNESS DEVIATION: +/-1.5 HSD
