开发和利用海洋资源已成为工业部门的一个重要领域,其发展十分迅速。海洋石油的开发,推进了勘探、采掘、海上作业技术以及深海底矿物的勘探和开采技术的发展。开采海底石油时,海底采掘装置、海底管道及起重工作平台等开采设备都需使用大量的结构用钢管。这种钢管的使用环境十分恶劣,因此对于它的性能,特别是对它的强度要求已越来越高,为此特研制了80公斤/毫米~2 The development and utilization of marine resources has become an important area of ​​the industrial sector and its development is rapid. The development of offshore oil has advanced exploration, extraction, offshore operations and the exploration and extraction of deep-sea minerals. When mining offshore oil, seabed mining equipment, submarine pipelines and lifting platforms and other mining equipment require the use of a large number of structural steel. The use of this steel pipe is very harsh environment, so for its performance, especially for its strength requirements have become increasingly high, for which specially developed 80 kg / mm ~ 2