摘要
在对管道 3PE防腐层的行业标准SY/T4 0 13— 95进行修订过程中 ,根据实际生产应用需要 ,对防腐层厚度指标进行了重新研究。通过详细研究国外PE防腐层厚度确定依据 ,并调研分析国内 3PE防腐管的实际应用情况 ,认为应该继续沿用依据德国DIN30 6 70标准制定的 3PE防腐层厚度指标 ;同时通过实际涂敷试验和检测分析 ,认为可以适当降低焊缝部位防腐层的厚度要求 (不得低于管体防腐层厚度规定值的 70 % )。该研究结果作为新版技术标准SY/T0 4 13— 2 0 0 2及有关的管道工程企业标准的内容 。
During the revising process of Chinese petroleum industrial standard SY/T 4013-95 about 3PE coating for buried pipelines,the coating thickness criteria had been studied again to meet the application need of practical production.By studying the reference of the PE coating criteria in overseas related standards,made surveys on the real application situations of 3PE coated pipelines in China,and decided to keep the original thickness criteria of 3PE coating in the previous edition of standard based on the German Standard DIN30670.In addition,by doing application test and inspection analyses,the results show that the thickness criteria of 3PE coating on welding seam could be reduced as not less than 70% of normal coating thickness criteria.The results have been quoted in the new edition of related industrial standard SY/T 0413-2002 and others,which have been executed to achieve very good social and economic benefits druing the last two years.
出处
《管道技术与设备》
CAS
2004年第5期38-40,43,共4页
Pipeline Technique and Equipment
关键词
3PE防腐层
厚度
管道
技术标准
PE Coating
Thickness
Pipeline
Industrial Standard
