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Dear tbuelna, in my client particular specification required before sand blasting process. requirement max. 50 micro gram. for your info, our coating process for pipeline coating 3LPP.

Dear All, I feel free to discuss to all expert. Why to required conductivity of steel substrate BEFORE surface cleaning (water jetting or sand blasting).

Dear All, I have construction for turbine stator and rotor container, these purpose for storage with internal pressure 5 psi using injection nitrogen. These fabricated not according to any code. I do hydrotest at 10 psi for 1 hour of holding time. during hydrotest, I found deflection on...

Dear All, Need help and advice from anyone who was pass for API SI examination. Anyone can help me what kind of exam materials to be prepared by me before take this exam. Thank you for your advice.

Agree with Weldstan you may verify using PMI to identified that on site. Than you analysis main alloying which you found by PMI.

What kind of your valve and pipeline material as installed?

Continue my previous comments: A216 made by casting for large piping parts. I think that should be state on piping material class, or you can refer to ASME B31.3.

Both specification are different. A105 made by forging specially for small fitting, flange and valve parts. Small size starting from size 0.5 inch till 1.5 inch ussually. A234 made by wrought this for large fitting and parts. Large size starting from 2 inch till 24 inch or large. The large part...

gr2vessel, Thank you very much for your explanation. Where can I get that summary of 45th edition improvement?

Please specify your materials for pipe,flange,or etc? ASTM A312 for Pipe Seamless and Welded ASTM A182 for Forging Component ASTM A403 for Wrought Fitting

Any one already compare between API 5L 44th with 45th edition? What matter of major revision/changed in new revision?