Quality Analysis on X80 Ф 1219 mm×22.0 mm SAWL Pipe Used for 2nd West-east Gas Pipeline Project

Based on data statistics of China domestic and abroad X80 grade Ф1 219 mm×22.0 mm SAWL pipe,it analyzed the difference in composition,structure design and performance.The results showed that the tensile property,the impact energy average values in pipe body and weld of China domestic X80 SAWL pipe are basically equivalent to that of imported steel pipes,even exceed.But the tensile property and impact toughness data are scattered,which shows there are some difference in quality stability or quality control measures between China domestic with abroad pipe.