耐候钢管概述：其特征在于：耐候钢管的合金成分及重量百分比含量为：C：0.12～0.21、Si：0.2～2.0、Mn：0.7～2.0、S ≤0.036、P≤0.034、Cu：0.10～0.40、Al<0.2，其余为Fe和微量杂质。通过Cu、 Mn、Si、Al等合金化，并简单调整普通低碳钢(Q235钢)的部分元素含量，在不需改变Q235钢生产工艺条件下，就能生产出具有良好的耐大气腐蚀性能、综合机械性能的经济耐候钢管。
Summary of Weatherproof Steel Pipe: Characteristic: The alloy composition and weight percentage content of weatherproof steel pipe are: C: 0.12-0.21, Si: 0.2-2.0, Mn: 0.7-2.0, S < 0.036, P < 0.034, Cu: 0.10-0.40, Al < 0.2, the rest are Fe and trace impurities. Through alloying of Cu, Mn, Si and Al, and simply adjusting the element content of common low carbon steel (Q235 steel), economic weatherproof steel pipes with good atmospheric corrosion resistance and comprehensive mechanical properties can be produced without changing the production process of Q235 steel.
