Experimental Research on Fatigue Properties of X80 Pipeline Steel for Synthetic Natural Gas Transmission

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Test environment no.</td><td class="align_center">Hydrogen content</td><td class="align_center">Nitrogen content</td><td class="align_center">Total pressure</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">0vol%</td><td class="align_center">100vol%</td><td class="align_center" rowspan="4">12 MPa</td></tr><tr><td class="align_left">2</td><td class="align_center">1vol%</td><td class="align_center">99vol%</td></tr><tr><td class="align_left">3</td><td class="align_center">2.2vol%</td><td class="align_center">97.8vol%</td></tr><tr><td class="align_left">4</td><td class="align_center">5vol%</td><td class="align_center">95vol%</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Mathematical Problems in Engineering

tab2

Table 2

Table 2: Experimental Research on Fatigue Properties of X80 Pipeline Steel for Synthetic Natural Gas Transmission 