High carbon, high molybdenum, high vanadium, low tungsten and niobium-bearing; excellent wear resistance, thermal crack resistance and surface-roughness resistance; suitable for roughing and finishing work rolls in hot wide strip mills.

Containing 10~14% chromium with proper Mo and Ni additions; good hardenability; residual compressive stress after heat treatment; strong resistance to thermal fatigue.

Work-layer chromium content 12%~22%, Cr-carbide content 25%~35%, with Nb/V/W/N grain refinement; overall performance improved by 15%~50%.

Carbon content 1.3%~2.3%; mechanical properties between steel and iron; widely used for roughing of hot strip, sections and bars.

Indefinite chilled centrifugal compound cast iron rolls; improved type with fine nodular graphite effectively solves water ripple and roll-mark problems on high-precision strip products such as silicon steel.