GB/T9711-2011 L555Q/X80Q PSL2 LSAW pipeline is KUNFENG Steel hot selling products,L555Q X80Q PSL2 LSAW pipeline is mainly used in conveying water, gas, air, oil and heating hot water or steam, etc. it accept chemical composition, tensile properties, hydrostatic pressure, guide bending and other testing,its surface can be galvanized protection, it also has a good yield strength and tensile strength.