Materials for gyratory crusher wear parts: Mantles → Manganese steel, which includes Mn14, Mn18, and Mn22; Concave Segments → Manganese steel, (which includes Mn14, Mn18, and Mn22), chrome steel, alloy steel ... Email: [email protected] Address: Gantang town Industrial Park, Shuangfeng County, Loudi City, Hunan Province, China. JY on …