研究连续油管钢循环应力-应变行为发现：相同试样在不同的恒应变幅下，表现出不同的循环特征。
To study of coiled tubing steel cyclic stress-strain behavior was found that: the same sample at different constant strain rate, the performance of cycle characteristics is different.
框架材料：5英尺1英尺3 / 4 “胶合板大陆架减少了一半。油管钢箱梁焊接头管，另一管钢箱梁焊接的体壳的所在地管。
Frame Materials: 5 foot by 1 foot 3/4" plywood shelf cut in half. steel box tubing welded to head tube, another steel box tube welded to a BB shell and to a seat tube."
不锈钢波纹膨胀管、挠性软管、补偿器、金属软管，回油管，网套管。
Flexible Hose, Compensator, Oil Return Tube, Flexible Pipe, Metal Pipe, Stainless Steel Corrugated Expansion Pipe.
围绕本钢生产石油管线用钢，结合生产中出现的问题，摸索出一套适合本钢热轧厂的最佳工艺。
In production of pipe line steel at Beixi Iron and steel Co. several defects are pre-vented by adopting optimum technology.
本文介绍了寒冷地区用高强度薄壁地面输油管用钢。
The present paper described the high strength thin wall tube steel used for oil transferring in the exfremety cold region.
本文介绍了寒冷地区用高强度薄壁地面输油管用钢。
The present paper described the high strength thin wall tube steel used for oil transferring in the exfremety cold region.
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