... and neat. (2)Quick construction speed. (3)Earthquake proof. steel structure workshopMaterialSteel frames:Q235 Q345, etc.hot roll H-style steel ... ,EPS sandwich plate,rock wool sandwich plate,polyurethane sandwich plate of 50mm,75mm,100mm. which is connected with the purline by ... .Bracing:X or V or other type bracing is made of angle,round pipe etc.Crane:crane span,crane lift height ...