国产精品美女久久久久av超清_法国空姐电影在线_国产999久久久_女仆男又爽又黄免费女仆视频_www黄色网址_午夜的福利_国产内射爽爽大片_污污视频在线_搞中出视频_麻豆精产国品_一二三精品_手机电影在线观看_日韩一区二区三区视频在线_乱老熟女一区二区三区_亚洲欧美丝袜中文综合

construction steel structure fire regulations

Guangzhou Steel tells you: construction steel structure fire regulations

1. Guangzhou fireproof coating protected by trained and qualified construction professional construction team. Construction of security technology and labor protection requirements, should be the existing relevant provisions of the state.
2. When the steel structure in place, the boom connected thereto, a horse track, pipe racks and other related components even installed, and after passing the acceptance, before proceeding fireproof coating.
3. Before construction, steel surfaces should be rust, and determine in accordance with the requirements of anti-rust treatment. Rust and rust treatment should comply with "Steel Construction and acceptance norms" in the relevant provisions.
4. steel surface debris should be cleaned, cracks or other fire use fire-resistant coating material which is connected at the block level before construction fill.
5. fire retardant coating construction should be carried out before the next interior decoration and are not damaged by the subsequent engineering conditions. When construction on the site and other objects need for fire protection shielding should be protected, just construction coating should prevent dirty fluid contamination and mechanical shocks.
6. Before the construction process and the coating is dried and solidified, the ambient temperature should be maintained at 5 ~ 38 ℃, relative humidity not more than 90%, the air should circulate. When the wind speed is greater than 5m / s, or rain and member surface condensation, not a job.