Pitting Inside the pipe

[inspjac]

Dear Sir,

I have recevied a pipe of 24" sch 60, Thk 24.61mm, which is corroded / pitting inside the pipe whole length. I have checked with the cam guage found about 1.5 to 2.5mm, which code shall i check to find the allowance / tolerance of corrosion.

thanks and regards
Jacob

 

[BigInch]

maybe you should look at B31G

Independent events are seldomly independent.

 

[Kiwi2671]

Jacob,
Not enough info.
What is the material ?
What specification was it manufactured to ?
What is the fabrication code you are intending to use it on ?
Cheers,
Kiwi

 

[DSB123]

If it is from a Supplier then send it back - Rejected!!!!

 

[Kenny1130]

Sounds like whomever you got your pipe from has a extrusion press. Pitting can come from improper heating or not enough pressure when extruding the billet.

 

[inspjac]

Dear Kiwi,
PIPE A333-6 SEAMLESS ASME, B36.10M/B36.19M BE SCH60, 24", Service - STEAM, BFW & CONDENSATE, Class - 600, Fabrication code - B31.3.
here i am asked to check for the reduction in thickness greater tha 12.5%, I doubt in such case how can i go for in such case, if its in a small portion or not scattered.
thanks
Jacob

 

[inspjac]

Dear Kiwi,

please see the image

thanks
jacob