Precast grooving. The peripheral structure is perlitic cementicious. The transition consists of a perlitic matrix with embedded cementite and lamellar graphite giving way to a perlite structure with embedded graphite veins.

With or without precast grooving , as required. The advantage over chill casting is in the higher fracture and wear resistance These properties mean that the rolls /roll rings are very robust and well up to the roughest production conditions in manufacturing to the highest demands on quality. The rolls and roll rings are machined ready to install, stress-relieved with the profile finish turned or rough turned.