Piping material

Dear Brothers, I am currently working on a project where the client has requested for the following in quote... [B]"The specification for station piping shall be the same as the preceding specification for API
5L Grade B"[/B]
Im getting clarification from them, but i need to know / understand in the meantime what the statement above is trying to say. ie I hope I am not missing anything.
The client does not have its own specification, and i am creating a pipe schedule table for them.
thanks in advance.

Nosa

If you know pressure and temperature design, process fluid you can do this.
API 5L equal ASTM A106 Gr.B