... (2)Quick construction speed. (3)Earthquake proof. steel structure workshopMaterialSteel frames:Q235 Q345, etc.hot roll H-style steel ... or welded H-style.Roof and wall panels:color steel plate,many size single steel sheet,EPS ... sandwich plate,rock wool sandwich plate,polyurethane sandwich plate of 50mm,75mm,100mm. which is connected with the ... ,we can also design for you. steel structure of China