... H section (specification Q235 , Q345 ) for columns and beams Secondary frame :hot dip galvanized C purlin , steel bracing , tie bar , ... structure, convenient relocation, easy to assemble and disassemble, and environment-protection,5). Various high and low structures can be designed on steel ... ). We used the high quality galvanized sheet and foam as the materiasl of the wall and roof .so the house is ...