... -span 2. Heat insulation 3. Durability 4. Antiseismic 5. Light weight Hangzhou Weidu Steel Structure Co., LTD is located ... Portal frame products;5. High rise building project;6. Others steel structure buildings.This project: Light steel structure building ... warehouse, and other industrial facilities..4.Advantage:Steel structure: light weight, high operational reliability ,earth-quake resistance, impact ...