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Dear JohnRTD Thanks for your comment , but could you please elaborate on "for alloy steel before testing we have to do some tests. "? It would be appreciated if you kindly explain more about the tests.

Dear Friends Thanks a lot for your valuable posts.As a matter of fact, we are going to substitute TOFD with RT in an Ammonia Unitized chiller where thickness is round 105mm.The vendor has a good practice in this regard and has sufficient expertise but due to some limitations of TOFD like ...

Dear Experts, I would like you to shed light on the possibility of using TOFD instead of RT in manufacturing a thick wall high poressure vessel.As far as I am concerned TOFD can be used but has some weaknesses like insensitiveness to surface defects up to 1/2". What is your recommendation.Is it...

Jiantsjoed Thx for your guidance.Yes material properties are the same but I would like to know about the quality.In which case the quality is better? Cheers

Dear Experts Is it possible to use A240 type 316L instead of A182 type 316L in manufacturing the valve body.As far as I am concerned the mechanical, chemical and physical properties of both classes are the same and the only difference is production process.A240 is plate and A182 is forged.As a...

Dear Experts Is it possible to use A240 type 316L instead of A182 type 316L in manufacturing the valve body.As far as I am concerned the mechanical, chemical and physical properties of both classes are the same and the only difference is production process.A240 is plate and A182 is forged.As a...

Thanks alot for yoru advices.Could you please introduce some technical articles or sources in this regard enabling me to get more information on the process and its industrial applications. Dear Metengr, is there any source for such prohibition in the reheater or superheater tubing ?Frankly...

Dear Specialists What is the major difference between 304 and 304H type ss? Is it possible to treat 304 in a way that it has the same characteristics of 304H of SA-240 family by controlling the carbon content? If yes , how? Regards

Hi Metengr Thanks for your response it was very useful.I understand that ESR can also be used in the construction of turbine blades. Cheers Rapid

Hi Richard Thanks for your valuable post. In fact, our vendor of the steam turbine driver of a compressor has changed the material of the blades from A422-2 to A422-3 and the difference was in the manufacturing process which A422-2 is by vacuum arc and the A422-3 is by electroslag.I did like...

Hi everybody Can anyone explain in brief to me the difference between these two processes and also in which process the quality of the product is better? Kind Regards

I would like to know how u would interprete the single and double random lenght of pipes in the language of piping. Does it have any relation with the size of the pipe? What is the minimum single and minmum double random lenght of pipes? Cheers Rapid

Thank you unclesyd I know it is a too general question but I did like to know your experiences and good practice for some common services in the industry such as utility or cooling water as I said so. It would be much appreciated if you kindly introduce me some good refrences , specially online...

Dear Friends I would like to know your recommendation for making the best type of branch connections in different services.Maybe as a general statement "branches shall be made by standard fittings in all sizes and services",can cover all clients requirements and the Contractors can get the...

ThANKS EVERYBODY FOR YOUR GUIDANCES.I WILL FOLLOW THE NACE STANDARDS.

Thank you unclesyd , We r not going to isolate two mating flanges but to isolate the ss stub-end piece from the cs lap joint type flange.Gaskets are generally used for isolation of two mating flanges and actually we have the gaskets in between the two stub ends. I hope that I could understand...

What is a good engineering practice to avoid direct contact between a stainless steel pipe with stub end connection and carbon steel lap joint flange ? Will painting the lap joint flange suffice? My second question :To bolt up two stainless steel flanges with CS stud bolts and nuts ,what is the...