L485M X70M LSAW pipeline is a carbon structural steel which under GB/T 9711-2011 standard,L485M X70M LSAW pipeline has good mechanical properties and chemical properties,GB/T 9711-2011 PSL2 L485M/X70M LSAW pipeline widely used in natural gas, petroleum, chemical, power, metallurgical thermodynamics, water supply engineering, steam heating, hydropower and long-distance pipeline project.