I-beam of mine usage steel:9#,11#,12# ... Length:8m,9m,10m 3.Standard:YB/T5047-2000 I beamHeBei YongYang Steel Company Ltd. is a joint venture ... than 2,000 employees including more than 120 persons who are the high-level technical professionals and managers. THE ... m15Heavy Rail38kg/mU71MnGB2585-2007 Q/YYG002-200838.73312,12.51043kg/mU71GB2585-2007 Q/YYG002-200844.6531050kg/m45MnGB2585-2007 Q/YYG002-200851 ...