API5L Line Pipe API 5L line pipe is a specification for seamless and welded steel pipes used for transportation of oil, gas, and other fluids in the petroleum and natural gas industries. This specification covers various grades of steel pipes, including grades A, B, X42, X46, X52, X56, X60, X65, X70, X80, and others. The API 5L line pipe specification includes both seamless and welded pipes, with different types of end finishes such as plain, beveled, or threaded. The pipes are designed to withstand high pressure, high temperature, and corrosive environments, and are used in a wide range of applications, including offshore drilling, transportation of natural gas, and pipeline construction. API 5L line pipes are manufactured according to strict quality control standards, and the specification includes requirements for chemical composition, mechanical properties, and testing procedures. The pipes are subjected to various tests, such as hydrostatic testing, non-destruct
