成人午夜两性视频在线看,欧美日韩国产三级在线播放,亚洲成人一区二区三区三州,日本天堂电影免费观看,欧美日韩国产一区二区免费,欧美日韩亚洲蜜桃,91麻豆精品传媒一二三区,国产欧美久久精品免费,日韩中文字幕91,久久一级黄色视频播放,国产一区二区一级毛片,黄色日韩av在线,日韩一区精品在线,野花日本韩国电影免费,韩国日本大片免费看,国产大陆一级毛片av,欧美亚洲日本在线播放,精品久久午夜精品电影,中文字幕久久一区二区精彩,欧美一级视频在线,婷婷久久五月激情,久久夜夜国产高清,欧美三级日本三级人妇三久久

In recent years, the rapid development of steel in the following areas

Foshan Steel in recent years, the rapid development in the following areas:

Light steel structure. Light steel structure is developing very fast, especially steel door, such as industrial plants, warehouses, cold storage, greenhouse, hotel, villa, etc. get a lot of use. Another arched corrugated roof, because light weight, fast construction, have been used in many 30 meters below the warehouse, processing plants and other structures, and has built several million square meters. Light steel structure residence also began to study and build some experimental projects promising.

Film and cable-membrane structure. The late 1990s to get some development, are still constantly expanding effect promising. If built in Shanghai in 1998 80,000 people Stadium bleachers, Shanghai Hongkou Stadium, Qingdao Yizhong Stadium, Wuhan Economic Development Zone, Changsha Window stadium and theater, etc., are relatively large-scale cable-membrane structure.

Steel structure high-rise buildings. High-rise building steel structure rather late, the first one was in 1987 in Shenzhen Development Centre 165 meters, then 208 meters of the Jing Guang Centre, 1996 325 meters in Shenzhen King Building, 1999 420 m Shanghai Jinmao Tower, built in recent years, The Shanghai World Financial Center is the tallest contemporary 460 meters.