... H beam C purlin, window, sandwich panel 4 ISO9001 1500sqm Fire-proof Large Span Steel Structure Plant I IntroductionCompared with the traditional ... , showrooms, hangar, etc. H beam, C purlin and floor decking are used as support braceFoundation bolt and high strength bolt ... chicken shed, container house, prefabricated home, exhibition hall, etc. 1500sqm Fire-proof Large Span Steel Structure Plant