API 5L X60 PSL2 refers to a specific grade in the API 5L specification for seamless carbon steel pipes used in oil and gas applications. The "PSL2" designation indicates that the pipes meet the more stringent performance requirements of the API 5L standard, with additional testing and quality control measures compared to PSL1 pipes.

Sch 40 SMLS (Schedule 40 Seamless) pipes refer to pipes with a specific wall thickness as per the schedule system. These pipes have a standardized wall thickness that provides a balance between strength and flow capacity.

API 5L X60 PSL2 Sch 40 SMLS pipes are commonly used for oil pipelines due to their high-strength properties and excellent resistance to corrosion. They offer reliable and efficient transportation of oil over long distances. The X60 grade has a minimum yield strength of 60,000 psi (415 MPa) and a minimum tensile strength of 75,000 psi (520 MPa), ensuring durability and integrity under high-pressure conditions.

With their seamless construction and adherence to industry standards, these pipes provide a reliable solution for oil pipeline applications, delivering oil safely and efficiently from production sites to refineries or distribution points.