... structure strengh, hot dip galvanized, greatly protracted time of use. Frame is easy for use, functional, agile, and safe. High structure ... strengh, hot dip galvanized, greatly protracted time of use.Frame is easy for use, functional, agile, and safe.Easy for ... for erecting and dismantling.3. Basic components associated with specific parts, used in the buildings of every kind of structure.4 ...