论文部分内容阅读
全世界生产钢管的钢约占钢总产量的10％,其中三分之一生产无缝管、六分之一生产大口径(>400 mm)焊管,其余的二分之一为小口径焊管。 几乎全部大口径焊管和大部分无缝管都用于各种管线。在90年代需要X80和X100等级的管线钢。在近海应用的管线,要求钢管直径小、壁薄,因而只有X65管线钢能满足此要求。然而,对海洋用管线钢的抗腐蚀和性能稳定性有严格的要求。在恶烈环境下使用的石油套管和钻管,要求具有很高的耐腐蚀性能,对于深井用的这种管材,必须用具有很高强度的合金钢。电站锅炉管对耐热性能有严格的要求,其
Steel production worldwide accounts for about 10% of total steel production, with one-third producing seamless pipe, one-sixth producing large-caliber (> 400 mm) welded pipe and the remaining one-half smaller diameter pipe. Almost all large-diameter pipe and most of the seamless pipe are used for a variety of pipelines. In the 90’s X80 and X100 grade pipeline steel is required. Pipelines used offshore are required to have small pipe diameters and thin walls so that only X65 pipeline steel can meet this requirement. However, there are strict requirements on corrosion resistance and performance stability of offshore pipeline steel. Oil bushings and drill pipes used in harsh environments require high corrosion resistance. For such deep pipes, alloy steel with very high strength must be used. Power plant boiler tubes have strict requirements on heat resistance, which