... per year, with wide flat plate rolling line (narrow and specifications: thickness and width of 7.5 75mm - 140-615mm, length, ... material: 50-15000mm Q195 Q235B Q345B, Q345C,,, 45 # 55#, 50#, and select the quality control standards, technical: Q / 320281PCR01-2005. Wide ... system certification, and have CE certification.if you want to buy this from us ,please contact me ,thanks!best regards. flat bar