Pipeline steel is the steel material for processing pipeline steel pipes, including medium and heavy plates and coils. Through processing, pipeline steels can be rolled into large-diameter pipes in the later stage, and then these independent steel pipes can be connected into one pipeline after another by welding, which becomes a long line of steel for transporting natural gas.
In order to meet the various requirements of pipeline transportation, pipeline steels now generally have the characteristics of high strength, high yield ratio, high impact toughness and good welding performance.
Pipeline steel is a kind of high-grade, precision and advanced product. At present, X70 and X80 are the two most mature and widely used high-strength pipeline steels in the world. According to the difference in strength, pipeline steel is divided into different grades. The higher the grade, the higher the strength of steel. (Take X80 as an example, X represents pipeline steel, 80 represents the strength level, and its unit is kpsi (thousand pounds per square inch), X80 represents the minimum yield strength is 80kpsi, converted to metric unit is 551MPa.
