I ENP and 3 ENP different

[TransMech]

Hi,
Who is the expert aware with what's the different between 1Enp and 3ENP on trim, the pipeline operational TEAM and pressure rate will be 149C and ANSI 600.
Thanks

 

[bljnv]

I guess:
1 ENP - 1 mil thick Electroless Nickel Plating
3 ENP - 3 mil thick Electroless Nickel Plating
Regards

 

[TransMech]

Thanks. blinv,
I means where I can find definition of the code which specific that should apply with 1ENP or 3ENP for higher operating temperature, typically my understanding is 3ENP gives trims pretection more than 1ENP.
Thanks.

 

[Cadista]

Check ASTM B 733-97