火力发电机组四大管道系统直缝埋弧焊管的市场需求与研制

分析了国内外火力发电机组四大管道系统（主蒸汽管道、再热蒸汽管道热段、再热蒸汽管道冷段和高压给水管道）应用大直径直缝埋弧焊管的基本情况，阐述了应用压力容器耐高温高合金钢板制作直缝埋弧焊管的技术条件，按照美国ASME锅炉及压力容器规范标准，利用JCO生产技术对直缝埋弧焊管进行研制，研制产品经过国家相关专业部门检测，同国外同类产品理化性能质量一致，价格仅是进口产品的56.5%，可以取代进口产品。直缝埋弧焊管在火电机组四大管道系统的应用实现了无缝化和国产化目标，可以替代进口埋弧焊管和大直径中壁厚无缝钢管。

Market Demand and Research on SAWL Pipe Applied to Four Pipeline Systems of Thermal Power Unit

In this article,it analyzed the basic situation of large diameter SAWL pipe applied to four pipeline systems(main steam pipe,heating section of reheated steam pipe,cooling section of reheated steam pipe,and high pressure water supply pipe) of thermal power unit at home and abroad,expatiated technical condition of adopting alloy-steel plate with high temperature resistance to manufacture SAWL pipe.According to ASME Boiler and Pressure Vessel Code,utilizing JCO technology to study SAWL pipe,the developed products were inspected by China national corresponding specialized department;its quality is at the same level with that of the similar products at abroad.The price of developed products is only 56.5% of that of imported products,so the developed products can make replacement of the imported products.The application of SAWL pipe in four pipeline systems of thermal power unit realized the aim of china localization and welded pipe instead of seamless pipe,so it could replace imported SAW pipes and large diameter seamless pipes with medium wall thickness.