课题设计了海洋工程用高强度无缝钢管合金体系，获得了最佳轧制和热处理工艺，开发出屈服强度690MPa级以上无缝钢管，最大壁厚50mm，具备-60℃冲击韧性和良好焊接性能；研发出大规格、高强度H型钢控轧控冷技术，阐明了其组织性能调控机制，开发出500MPa 级高强度H型钢、H1000以上大规格型钢和 R6 级锚链钢及系列配套焊材；开发出了海洋工程用钛/钢复合板，界面结合强度大于 220MPa；制备出大型铸造节点及高耐蚀双相不锈钢粉末冶金制品原型产品。课题数据内容包括：炼钢过程杂质元素与夹杂物控制水平，粗轧与精轧阶段奥氏体再结晶规律，控轧控冷对力学性能影响规律，制管前后性能变化规律，以及H型钢、钢管批量力学性能等，数据以图表形式表述，数据量约为120条，共享方式为协议共享，延期2年公开。

The project designed a high-strength seamless steel tube alloy system for offshore engineering, obtained the best rolling and heat treatment process, developed a seamless steel tube with yield strength over 690MPa, maximum wall thickness of 50mm, impact toughness of -60℃ and good welding performance; developed a large-size, high-strength H-beam controlled rolling and cooling technology, clarified its organization and performance control mechanism, developed a 500MPa high-strength H-beam, a large-size H1000+ section steel and an R6 grade anchor chain steel and a series of supporting welding materials; developed a titanium/steel composite plate for offshore engineering with an interfacial bond strength over 220MPa; prepared a large casting node and a high-strength anchor chain steel and a series of supporting welding materials. H-beam, H1000 or more large section steel and R6 anchor chain steel and a series of supporting welding materials; developed a titanium/steel composite plate for marine engineering, the interface bond strength is greater than 220MPa; prepared a large casting nodes and high corrosion resistance duplex stainless steel powder metallurgy products prototype products. The data content includes: steel making process impurity elements and inclusions control level, rough rolling and finishing stage austenite recrystallization law, control rolling and cooling on the mechanical properties of the law, before and after the tube production performance change law, and H-beam, steel pipe batch mechanical properties, etc. The data is expressed in the form of charts, the amount of data is about 120, the sharing mode is agreement sharing, extended 2 years of public.