A53 Gr. B vs API 5L Gr. B PSL2

read and understand thishttp://www.woodcousa.com/line_pipe_properties.htm

Did you choose ASTM A53 Grade B solely because it was cheaper?

Or, was there some compelling technical reason to choose it?

Tornado is correct.

If your client stated that either pipe specification was acceptable in their request for proposal, you don't need to explain anything.

If they are now stating that they want API 5L pipe, and it is more expensive, I smell a change order.

Incidentally, I regularly use A53 Grade B pipe in some pretty harsh temperature, vibration and pressure environments without any issues.

Dear Gentlemen,

Thank for your reply.

The fact that our purchasing department did that, we just at site and have to find the reason to explain :(.

Could someone help me to go deeper with A53 and API 5L grade B. What is meaning of PSL, is it mandatory?

Thank & have nice day!

PSL = Product Specification Level

The differences explained here;

http://www.regencysteelasia.com/pdf/pdf47.pdf

What does the pipe carry?
To what temperatures will the pipe be exposed?
What code is being followed?

Here is comparison:-

Item C Mn P S Cu Ni Cr Mo V Tensile Str. Yield Str.

ASTM A53 0.3 1.2 0.05 0.045 0.5 0.40 0.4 0.15 0.08 60,000 psi 35,000 psi

Grade B

API 5L 0.3 1.2 0.05 0.06 60,000 psi 35,000 psi

GradeB PSL2.

There is no difference in both specs.except sulphar content. Some times quality control engineers are too bookish.

Sorry tabulation is shifting.