亚洲欧美中文字幕在线观看_两个人免费观看日本的_精品欧美一区二区三区久久久_久久久久99精品成人毛片,国产交换配乱婬视频偷网站,国产在线99,亚洲欧美日韩国产视频,免费一区二区三区在线视频,97嫖嫖视频97啪啪视频,国产精品免码视频二三区。

Enterprise performance
Special-shaped column steel structure residence
Time:2020-06-29

This sample building is located in Jinnan District, Tianjin. This project adopts the Concrete filled square steel tubular special-shaped column structure system, ALC plate inner and outer walls, and concrete prestressed floor slabs. Special-shaped column sample building adopts steel structure assembled main structure combined with concrete prefabricated components to solve the complex facade problem, and develops and uses Steel Structure Plus Technology.