日韩人妻无码一区二区三区久久99_日韩精品一区二区三区中文在线_无码日韩精品一区二区免费_久久久91精品国产一区二区三区_亚洲精品久久久一区黄无码_精品欧美一区二区在线观看欧美熟_精品一区二区高清免费观看_国产免费一区2区3区_国产日韩精品福利视频综合一区二区三区四区

Nigeria 4 storey office steel building

Steel Structure 4 Floor Office In Nigeria

Steel Structure 4 Floor Office In Nigeria have special design.The whole frame use for the steel structure.The main frame use the H beam ,wall frame use the keel steel to do.About the floor use for the floor decking steel sheet ,included the stairs.The whole installation time just use the 2 months.

Steel beam and steel column connection

a

steel frame picture

Wall installation

overall graph