... # Materials:Q235 Length:8,9,10 standard:ISO9001:2000 11# I-Beam can be used for mine tram road ... size:9#,11#,12#,20# Materials:Q235Length:8,9,10standard:ISO9001:2000 ... HeBei YongYang Steel Company Ltd. is a joint venture with registered capital of RMB ... QU120, I-beam of the mine usage steel of 9#11# & 12#, U-Beam for the mine support steel of ...