... YB/T5047-2000 I-beam of mine usage steel:9#,11#,12# THE LIST OF YYGT Name of ... pcs/bundle)Light Rail4kg/mQ235Q/YYG001-20084kg/m6,8,9,10758kg/mQ235Q/YYG001-20088.42kg/m5512kg/mQ235GB11264-8912.2kg/ ... Usage Steel9#20MnK/ Q235YB/T5047-200017.69kg/m8,9,102811#YB/T5047-200026.05kg/m1812#YB/T5047-200031 ... / Q235 GB4697-1991 Q/YYG006-200824.95kg/m8,9,10,121529UGB4697-199129kg/m1536UQ/YYG006-200835.87kg/m15 Name ...