H Beam 1.Standard:BS 2.Grade:Q235B,Q345B,SS400,SM490B 3.Thickness:7-24mm 4.Length:6-12mm H Beam 1.Technology: hot rolled 2.Grade:Q235B,Q345B,SS400,SM490B 3.Length:6-12m4.Certificates:ISO 9001Steel 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% ...