... m, 118.8kg/m Length: 12m Material: U71Mn Standard: GB3426-824. Japan& Korea Standard Rail Specification: 37A, 50N, CR73 Unit Weight:37.2kg/m, 50 ... .4kg/m, 73.3kg/m Length:10,12m Material:U71Mn Standard: KSB8106-80, JIS E ... : 24.833kg/m, 30.618kg/m, 29.822kg/m 34.807kg/m, 37.455kg/m, 37.041kg/m 39.761kg/m 45.099kg/m, 50.182kg/m, 56.398kg/m Length: 12 ...