L290Q/X42Q PSL2 LSAW pipeline is a carbon structural steel which is under GB/T9711-2011, L290Q/X42Q PSL2 LSAW pipeline is mainly used in land, coastal oil, natural gas, liquid coal and other long-distance pipeline. Besides,It also can be used as offshore platforms, power plants, petrochemicals, urban construction and other construction pipeline applications,its surface can be painted black paint, zinc and so on.