Influence Factors of Specified Total Elongation Strength R_t0.5 of Pipeline Steel

For large fluctuations about specified total elongation strength Rt0.5 of the tensile properties of continuous pipeline steel, the correction method of abnormal test curve was proposed by experimental investigations, Rt0.5 of tensile specimen was studied on comparison test in terms of different shapes, size and sampling direction, and the key control points on test of reducing pipeline steel product performance dissents were found.