钢管防腐涂料,有热喷沥青、环氧沥青、苯乙烯及聚氨酯等,但是这些涂料普遍存在着毒性,在进行施工时,除锈要求高,且表面必须干燥,这样会给施工带来一定的困难。百丈际水电站,钢管全长500多米,直径1.5～1.8米,水头落差350多米,建成后,已使用了十几年,发现管子有锈蚀现象,须寻找性能良好的涂料,经过调查研究,初步认为,用水泥砂浆作钢管衬里涂料的方法,最为理想。其防锈原理,是利用水泥砂浆隔绝钢管表面与 Steel pipe anti-corrosion coatings include hot-pitch asphalt, epoxy asphalt, styrene, and polyurethane. However, these coatings are generally toxic. During the construction, the descaling requirements are high, and the surface must be dry, which will give the construction a certain degree of difficult. Baibaiji Hydropower Station has a total length of more than 500 meters, a diameter of 1.5 to 1.8 meters, and a head drop of more than 350 meters. After completion, it has been used for more than 10 years. It has been found that the pipe has rust, and it is required to find a coating with good performance. After investigation and research, it is initially considered The best method is to use cement mortar as the method of lining the steel pipe. The principle of anti-rust is to use cement mortar to insulate the surface of steel pipes.