1.technology:hot rolled h beam 2.grade:Q235B Q345B 3.length:6m,9m,12m steel H beams is a new production for construction and easy to be used with light weight, strong rigidity, high quality and fine appearance, After using Hbeams,30%-50%construction time can be decreased and 5% usage area of the room can be increased, 10%-30% of steel can be saved and 20% of the integrated cost of construction ...