The contents shall be good reference for pushing high grade steel applied into national oil and gas pipeline,basic research of pipe application,pipe making and application technology developments.

  • 对进一步推动我国油气管道建设用高钢级管线钢及钢管应用基础研究、生产和使用技术的提高具有很好的借鉴作用。
目录 查词历史