三层PE防腐技术具有防腐性能好、机械强度高等优点,在管道工程中得到广泛应用。由于螺旋埋弧焊管存在焊缝余高超高和焊缝形貌不规整等现象,加之聚乙烯原材料及涂敷工艺等因素的影响,会使三层PE防腐涂层出现涂层厚度不均、焊缝处涂层减薄等质量问题。针对这些问题,文章从钢管、聚乙烯原材料、涂敷工艺等方面进行分析,并提出相应的解决办法,确保了防腐产品的质量。 Three-tier PE anti-corrosion technology with good corrosion resistance, high mechanical strength advantages, in the pipeline project has been widely used. Due to the existence of spiral submerged arc welded pipe extra-high weld heights and weld irregularities and other phenomena, coupled with the polyethylene raw materials and coating process and other factors, will make the three PE anti-corrosion coating coating thickness uneven, welding Coating at the seam thinning and other quality problems. In response to these problems, the article analyzes the steel pipe, polyethylene raw materials, coating technology and other aspects, and put forward the corresponding solutions to ensure the quality of anti-corrosion products.