API 5L X65 PSL1 (Pipeline Steel Grade X65) pipes are available in both seamless and electric resistance welded (ERW) types. The schedule designation for these pipes refers to the wall thickness of the pipe. Here's an overview of the common schedules available for seamless and ERW API 5L X65 PSL1 pipes:

1. Seamless API 5L X65 PSL1 Pipe Schedule: Seamless pipes are available in various schedules, including Schedule 10, Schedule 20, Schedule 40, Schedule 80, Schedule 160, and heavier schedules such as XXS (Extra Extra Strong). The specific schedule required depends on the application and design requirements.

2. ERW API 5L X65 PSL1 Pipe Schedule: ERW pipes are typically available in a narrower range of schedules compared to seamless pipes. Common schedules for ERW pipes include Schedule 40 and Schedule 80. However, availability may vary depending on the manufacturer or supplier.

It's important to note that the selection of the appropriate schedule for API 5L X65 PSL1 pipes should be based on the specific requirements of the project, taking into account factors such as pressure, temperature, and intended application. It is recommended to consult with the manufacturer or supplier to determine the availability and suitability of different schedules for a particular project.