深水海管涂敷钢管表面处理的质量管理

Quality Management of Surface Treatment of Deepwater Pipeline Before Coating

总结介绍深水海底管线在防腐涂层设计时的要求,详细说明3层聚烯烃防腐涂层的结构及优点,同时针对项目海管涂敷作业时钢管表面处理所遇到的技术问题(包含酸洗、抛丸打砂、除尘、预热等),重点阐述两次抛丸打砂工艺方法,以及相关协调管理深水海底管线涂敷质量和项目工期风险的具体操作实践,可为海管项目管理人员以及涂敷场技术人员提供参考和借鉴。

The design requirements of anticorrosion coating for deepwater pipeline are summarized,and the structure and the advantages of the three layers of polyolefin anticorrosion coating are explained in detail.Aiming at the technical problems including pickling,shot blasting,dedusting,preheating,etc.encountered in the surface treatment of steel pipes before coating,the process of two shot blasting and grit blasting,and the specific operating practices of coordinating and managing the coating quality of deepwater pipelines and project duration are stressed.It can provide reference for submarine pipeline project management personnel and coating field technicians.