X65 (Gr. 448) versus X70 (Gr. 483) Line Pipe for Sweet Service, Liquid Transmission Lines 3

[auzie5]

Anybody ever heard of compelling argument to use X65 (Gr. 448) over X70 (Gr. 483) line pipe for sweet service, sales oil, transmission pipelines? NPS 20 for discussion purposes.

Thanks in advance for any input.

 

[BigInch]

Exactly why they put in the "<" part.