Pipeline steel L485 corresponds to X70 – what is the relationship between these numbers?
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Pipeline steel L485 corresponds to X70 – what is the relationship between these numbers?
Both pipeline steels L485 and X70 indicate the strength grade of steel used for pipelines. Among them, L485 is named according to Chinese standards; the number 485 indicates that the minimum yield strength of this material is 485 megapascals (MPa). X70 is named according to the American API (Petroleum Institute) standards; the number 70 generally indicates that the minimum yield strength of this steel is around 70 kilopounds per square inch (ksi), which is approximately 483 MPa when converted to megapascals. Therefore, the values for both refer to the minimum yield strength of the material, and the figures provided by the two standards differ very little; they can essentially be considered equal. .