Vertical Roller Hardfacing welding wire Application Model hardness Spec (mm) Main Ingredients Suitable for repairing coal grinding mill, grinding disc, cement vertical mill, etc. HB100 58-63 2.8, 3.2 C, Cr, Mo HB100L+ 58-63 2.8, 3.2 C, Cr, Mo HB100+ 58-63 2.8, 3.2 C, Cr, Mo HB350 58-63 2.8, 3.2 C, Cr, Mo, Nb HB650 58-63 2.8, 3.2 C, Cr, Mo, Nb ...