Study and Analysis on the Tensile Test Elongation Variation Law for High-Strength Pipeline Steel

In view of the tensile test elongation conversion problems for high-strength pipeline steel, several kinds of high-strength pipeline steel were selected to study the corresponding tensile test elongation variation laws. Then, a statistical analysis was carried out on a large collection of test data. The test results showed that the Oliver formula, which was established based on old carbon steel and low-alloy steel, is still applicable to...