暖气片安装前 ,按设计要求必须刷二遍红丹漆。有些施工人员 ,对涂刷红丹漆的作用认识不足 ,有的认为刷红丹漆就是为防锈 ,在暖气片上往往刷两遍防锈漆就完事了。这些施工人员有所不知 ,锅炉所烧的水中含有氯化钠 ,防锈漆只能防锈 ,不能抵抗盐水的侵蚀 ,而红丹漆能抵抗酸碱盐的? Radiator before installation, according to the design requirements must brush two times Hongdan paint. Some construction workers, lack of understanding of the role of brushing Hongdan paint, and some think that brush red Dan paint is rust-proof, often in the radiator brush twice over anti-rust paint to the end of the matter. Some of these construction workers do not know, the water boiler contains sodium chloride, rust-proof paint can only rust, salt water can not resist erosion, and red Dan paint can resist acid-base salt?