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在第十一个五年计计中要求扩大使用天然气和石油来改善工业用能源的供给。工作压力在5.5兆帕的情况下,输送气体的传统方法业已保证不了把气体经济地送到远距离的用户。为了提高运输系统效力,要求把工作压力提高到7.5—10兆帕并加大管道直径来大大地提高主干线的生产能力。在输送压力参数为7.5兆帕的气体时,钢管应具有高的强度,在北方恶劣气候条件下,铺设和使用的管道还要求具有高的耐寒性。苏联黑色冶金工业部黑色冶金研究所首先推荐并在国内得到推广的按新法对钢管
In the eleventh five-year plan, it is required to expand the use of natural gas and oil to improve the supply of industrial energy. Working at 5.5 MPa, the traditional method of delivering gas has not been able to deliver gas economically to users at long distances. In order to improve the efficiency of the transportation system, it is required to raise the working pressure to 7.5-10 MPa and increase the diameter of the pipeline so as to greatly increase the production capacity of the main line. Steel pipes should have high strength for the delivery of gases with a pressure rating of 7.5 MPa, and pipes that are laid and used also require high cold resistance in the harsh climates of the north. Black Iron Institute of the Soviet Union’s Ministry of Metallurgical Industry first recommended and promoted in the country according to the new law of steel