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Dear Experts, Can you suggest what should be the basis for design of a pressure vessel for vacuum pressure. Regards, Pranjal

Dear Experts, What should be coating thickness of Tungsten Carbide on metal seated ball Valve? In one of TOTAL specification I have noticed the coating thickness to be 400 microns. But many of the vendors in the field informs that 400micron is not a good option. Most optimum value shloud be in...

Dear Experts, I am confused about hardness requirement of Corrosion Resistant Alloys. NACE MR 01-75/ISO-15156-1/2/3 does not categorically suggests the hardness value of Incoloy-825 and Incoloy 625 material. Can experts in the field through light on the subject. Regards,

Can any body suggest the of of UNS N 08825 and UNS N 06625 as per NACE MR0175/ISO1516-1/2/3. I need the referance clause of MR-0175. Regards,

Hi Experts, Can any body suggest whether in a offshore platform all the valves including Shut Down Valve can be made metal seated. In such case what should be the criteria in case of spec. Break. Because with metal seated valve, zero leakage is not possible and hence, if there is a spec. break...

Dear Experts, Can some body advice on the basis of selection of pressure vessel head. Regards,

Dear Experts, I am little confused to understand that ZINK being anodic with respect to carbon steel how it will save carbon steel from corrosion in case of hot dip galvanizing. Rather, the zink layer will get corroded. Please clarify my understanding on the issue, Regards

Dear Experts, Is any difference in piping support design for a piping system having slug flow. Can any body suggest study material for the same. Thanks and regards

Dear Experts, Can any body suggest the manufacturing process for cladded and line CRA pipe. Because API 5LD which is a relevent spec. for cladded or lined CRA pipe does not specifiy the proces of manufacturing.

Dear experts, Can any body suggest what does rating 3000,6000 and 9000 etc. means as per ASME B 16.11. What should test pressure for items produced in rating 9000.

Hi experts, Can any body suggest regarding time within which a shutdown valve of hydrocarbon export line should close. Thanks

Dear experts, I have a very special problem of routing a pipe of 32" size in over head pipe. The problem is associated with routing of the pipe in an existing complex. There I can not make platform/rack and therefore, I have to put local supports based on stress analysis. The contractor...

Dear experts, I have a special problem with respect to valve that are used in offshore oil and gas industry. A perticular manufacturer supply us valves complying all the testing and specification requirement. But it is observed the all those valves start passing within a very short span of...

For development of one of oil field in offshore, we are in the process of installing an unmanned well head platform. The well fluid (Mainly gas) from the said unmanned platform is to be transported to a process complex via sub sea pipe line of size 28". During detail engineering for top side...

Can any body suggest advantage and disadvantage of Longitudinal seam visa-vis helical seam welded pipe because I am in fix to decied between this two with API-5L pipe. Further, I would like to know what should be preffered between this two. Please suggest.

I have observed a unique problem with respect to dilution of Fe content while welding over laying 3mm Incoloy 625 on API -5L pipe. After over laying it was observed that Fe conten has gone up to 8% in the over laid layer. Fe content as indicated in MR 01-75 FOR Incoloy 625 is 5% max. Now can any...

In one of the specification I have found that client has asked for Inter Granuler Corrosion test as per ASTM A 262 Practice F for Incoloy 825 cladded pipe. But test conducted by the manufacture resulted in corrosion rate more than required minimum as per the specification. But now the...

I have found a specification requirement for Incoloy piping with ASYM B 423 cold finnshed annealed material for piping system. But I have learnt that ASTM B 423 material is available in cold finnished annealed condition uo to 6" only. There fore I have no other option but to use ASTM B 423 hot...

I have found a specification requirement of ASTM B 425(UNS No. N 8825)forging for fittings and flanges but I have observed that this ASTM specification is for rod and bar not for forging whereas the ASTM B 564(UNS No. N 8825)is for forging. Now I am informed that if any specification calls for...

I have found a specification requirement of ASTM B 425(UNS No. N 8825)forging for fittings and flanges but I have observed that this ASTM specification is for rod and bar not for forging whereas the ASTM B 564(UNS No. N 8825)is for forging. Now I am informed that if any specification calls for...