GB/T9711-2011 L320Q/X46Q PSL2 LSAW pipeline is an industrial steel pipe,L320Q X46Q PSL2 LSAW pipeline is mainly used in conveying water, gas, air, oil and heating hot water or steam, generally low pressure fluid,its carbon content is below 0.18, and have good yield strength and tensile strength,its surface can be painted galvanized wait.