API 5L X65 Pipes Manufacturers define this product by its material grade and minimum yield strength of 65,000 psi. The "X65" signifies a higher-grade carbon steel used in both PSL1 and PSL2 categories. These pipes comply with the American Petroleum Institute Specification 5L, which standardizes pipe production for pipeline transportation systems. API 5L X65 is available in seamless an... https://www.carbonsteelspipe.com/api-5l-x65-pipes-manufacturers-exporters-suppliers-stockists.html