Steel Structure:Steel frames: Q235, Q345, etc.Roof and Wall Panels: Steel plates of 0.4, 0.5mm... We can supply all kinds of steel structure, included design and manufacuture, welding beam, column, C,Z -shape purlin.Steel Structure:Specs: Steel frames: Q235, Q345, etc.Roof and Wall Panels: Steel plates of 0.4, 0.5mm, or EPS/ PU sandwich boards of 50mm, 75mm, 100mm. Steel structure workshop ...