Low-Temperature Pipeline Nomeclature

hi

The material belongs to low temperature carbon steel

LF2 - Flange (ex A350 LF2 - Fittings)

WPL6 - Elbow (ex A420 WPL6 - Fittings)

Class 1 or 2 - specification in pipe (ex A333 Gr1 , A333 Gr 2)

Regards

Mani

thank you very much.

Do you know what W and P and L stand for?

LF2 is a grade within the specification SA/A-350; with Class 1 and 2 as subgrades to LF2.

http://www.techstreet.com/cgi-bin/detail?product_id=1533657

WPL6 is a grade within the spec SA/A-420:

http://www.techstreet.com/cgi-bin/detail?product_id=1376616

Hello XMech,

Good to here from you and thanks.

WPL = Welding Pipe Length?

Dejan

If you are referring to the 'WPL' of the grade WPL6 of SA-420, I am not sure what it stands for.

Within SA-420, there are other grades as well, for example: WPL3, WPL8, WPL9

And because this spec is for fittings I would guess that "Welding Pipe Length" is meaningless - I would say that it could possibly be a hold over from the old days, and may mean something like "Welded Pipefitting Low-temperature",

In any case, I don't think it is important - it is just nomenclature; for example, what does the "420" stand for in SA/A-420? The answer is nothing - it is just a number.

XMech,

Thanks for being logical and concluseve.

I agree with you and like your answer.

Thanks again

Dejan