... steelstructure prefab house made by the C purlin, Z purlin,sandwich panel,corrugated steel sheet and other accessories like the door ... Local climate: Wind speed, snow load, etc. 4. Insulation material: Sandwich panel or steel sheet. 5. Crane beam: Do you need ... In the fields of building, railway, highway, water conservancy project, electric power, business, tourism and military use. The houses are all ...