中文字幕一区二区在线播放_中文字幕一区二区精品区_中文字幕在线看无码a_中文字幕在线观看91_中文字幕永久免费_无码视频一夜夜嗨_无码任你躁久久久久久老妇91

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