RAW material:quality carbon steel,60#,65#,70#,72A,82B Standard:ISO,DIN,ASTM,JISect ... better quality Elevator Wire Rope,8X 19 Wire Ropes with Steel Core/Mixed CoreConstruction:8 x 19S + IWRC8 x 19W + IWRC8 ... rope and outer layer are laid in two operations ,Preformed, bright, right-hand, regular layApplications: suspension ropes for elevator speed,4m ...