API 5L Pipeline Factory Manufacture
API 5L line pipe follows the API Spec 5L standard, which covers a wide range of steel grades from A25 to X80 to meet different transport needs. The latest version is ISO 3183:2012/API Spec 5L (45th edition), with new appendices, such as a reference for ordering PSL 2 pipe for European onshore gas pipelines, and updated formulas for calculating threads and joints.





