We should know that construction screw steel is most afraid of rusting and corrosion. When we visit the steel market, we will see two ways to store the screw steel. One is to put it outdoors directly and expose it to the wind and sunshine; the other is to store it in a shed, where the rain can't reach it and the sun can't shine on it.

　　我们生活里重要的建筑材料有很多，也就属于钢材多，若日常维护不当，建筑螺纹钢就会发生腐蚀。

　　There are many important building materials in our life, which belong to the steel most. If the daily maintenance is not proper, the construction screw steel will be corroded.

　　一.大气环境下的钢筋受阳光、风沙、雨雪、霜及一年四季的温度和湿度变化作用，大气中的水分和氧是造成户外钢材腐蚀的重要因素。

　　1. Steel bars in atmospheric environment are affected by sunshine, wind and sand, rain and snow, frost and temperature and humidity changes throughout the year. Water and oxygen in the atmosphere are important factors causing corrosion of outdoor steel.

　　二.这针对一些沿海区。海洋大气里有含有大量的盐，盐颗粒沉降在金属表面上具有吸潮性、侵蚀性，因而加重了金属表面的腐蚀，越是沿海钢材的腐蚀度就越严重。

　　2. This is aimed at some coastal areas. There is a large amount of salt in the ocean atmosphere. The deposition of salt particles on the metal surface has moisture absorption and erosion, which aggravates the corrosion of metal surface. The more serious the corrosion of coastal steel is, the more serious it is.

　　三.工业地区的钢材，工业气体里有SO2、NO2、H2S等金属元素，这些气体与地天空的雨结合会呈酸性，如果下雨形成酸雨，腐蚀金属设施，建筑螺纹钢储存不当也逃不掉腐蚀。

　　3. Steel products in industrial areas and industrial gases contain SO2, NO2, H2S and other metal elements. These gases will be acidic when combined with rain in the earth and sky. If acid rain forms and corrodes metal facilities, construction threaded steel can not escape corrosion if it is stored improperly.

　　钢材是大型物件，且也算是昂贵的，钢材经销商要做好防护措施，本公司的螺纹钢是全新的，规格也齐全，国标的钢材是你的。

　　Steel is a large-scale object, and the price is expensive, steel dealers should take good protective measures, Tianjin Tiantaicheng Steel Company's threaded steel is new, specifications are complete, national standard steel is your first choice.