1.higher intensity
2.better tenacity
3.wear-resistance..

 specification: diameter 60---1500; length≤6000; weight≤50T

material: 9Cr2Mo, 9Cr3Mo,86CrMoV7,MC3,MC5,GCr15,EN19, SAE 52100,etc.

barrel hardness: HSD80----102 (higher hardness)
barrel hardness evenness: ≤3HSD

hardness depth (one side) 12---35mm

standard: GB/T13314-2008; GB/T15547-1995

used for: cold rolling mill

manufacturing process: ingot-forging-UT-rough machining-UT-QT-2th rough machining-UT

-magnetic particle test-quenching-magnetic particle test-finished machining-UT

-magnetic particle test-oiling-packing-shiping