... Q345B,SS400 Standard:GB/T-11263-2005,JIS G3101 H beam Description: One kind of profile bars with "I" shape section, the ... mechanism and so on. specifcation necessary for inquiries: product name, standard performed,materials, specifcation, quantity, length, handling time,measure way. ... . For more information,please contact directly without any hestation. Q235B H beam( Hot rolled H beam, GB Standard)