ISO 3183 LINE PIPE - L450ME 1

[GabrieleB]

I have to purchase a line pipe with a material grade L450 ME. I suppose that "M" stay for thermomeccanically rolled condition. But the ulterior suffix "E" for what is?

 

[LittleInch]

It stands for pipe ordered to Appendix M for European onshore natural gas transmission. I don't know what the difference is, but I assume this was to incorporate the requirements of the EN line pipe code (EN 10208-1) so that it could be withdrawn, as indeed it now has been.

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