It test the properties of grade X80 steel and its trial-manufactured spiral submerged arc welded pipe produced with tensile test,bending test,hardness test,series temperature impact toughness,DWTT etc. .

• 对X80级热轧板卷及用其所试制的螺旋埋弧焊管的拉伸、冷弯、硬度、系列温度冲击韧性、DWTT等性能进行了测试。