GB/T 9711-2011 L290M/X42M PSL2 LSAW pipeline is mainly used in petroleum, natural gas, chemical industry, electric power industry and shipbuilding, water transportation, L290M/X42M PSL2 LSAW pipeline's surface can be coated with spraying, coating, lined with 3PE, 2PE, FBE, sandblasting,can accept X-ray, ultrasonic inspection and water pressure inspection.