... to 30# 6M 9M 12M We offer high quality channel steel Q235,Q345,SS400,S235JR 8# to 30# ... 6M 9M 12M channel steel1.size:8#--30#2.material:Q235 SS400 ... -23.length:6m 9m 12m1. JIS standard U channel 50-150mmStandard SectionalDimension (mm)Web thickness (mm)Flange ... mill. In 2005, Yuxuan steel start to open international market. With professional management and strong capital supports, ...