Materials & Welding

Dear zohair, Thank you for your help! We have decided to use SS316 steel instead of carbon steel. Problem is actually because of sulphuric acid corrosion. Kind regards, 1 Nisan 2021 Perşembe tarihinde saat 09:51:58 UTC+3 itibarıyla Zohair.O şunları yazdı: Hi everyone,  Sulfuric acid is very tricky when we talk about corrosivity because it depends on many factors ( concentration, temperature, velocity ... etc). For the concentration of 98% generally, it's better to use the SS316 instead of carbon steel for pipes, and you may use the carbon steel tanks with SS clad or overlaid nozzles.  I thank the problem is mainly related to material selection.     you can consult the NACE Standard related to sulfuric acid storage tank inspection.  Z.O Le mercredi 31 mars 2021 à 04:14:02 UTC+1, chandrakant mohikar a écrit : Nozzle failed means, what exactly happened.?  if no flow through nozzle means, it is choked. it should be dechoked and material like dirt etc to be removed, another reason may b...

"> Thanks & Regards J.Gerald Jayakumar On Thursday, 29 April, 2021, 05:05:29 pm IST, abdulkhadar musthafa <abdulrilvan@gmail.com> wrote: Dear Experts , Is there is any minimum and maximum  temperature for  test medium in Pressure testing ??? -- ABDUL KHADAR MUSTHAFA +91-9841879981 (India ) +965- 50399719 (Kuwait) "The reward of deeds depends upon the intentions" -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-weld...

Dear Experts , Is there is any minimum and maximum  temperature for  test medium in Pressure testing ??? -- ABDUL KHADAR MUSTHAFA +91-9841879981 (India ) +965- 50399719 (Kuwait) "The reward of deeds depends upon the intentions" -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAGdS7U-it6gVJHCP88YiLCncSaiuqXtVH368jfd8LDMonLiQ_g%40mail.gmail.com .

Dear Friend , try to replace E 2594 by E2595 .. it have W element which is promoting ferrite Best Regards , ENG. Ahmed Osman On Thursday, April 29, 2021, 11:50:38 a.m. GMT+3, Chintan <chintan51@gmail.com> wrote: Dear Expert,  After Filling & Capping of  Weld Metal, During % Ferrite check via Feritoscope  values are showing less than requirement, How ever all other test i.e. Hardness, PMI etc. are well accepted.  Kindly advice on  possible root cause as well as tips to achieve high Ferrite  Please find below details for your quick ref.   Material Grade - SDSS -UNS s32760 Joint type -Pipe - Butt weld - 18 mm thick  Welding Process - GTAW + SMAW  Welding Consumable - ER 2594 + E 2594-15 % Ferrite - GTAW ( Root ) - 35%, SMAW ( Capping) - 25 -28 %, Base metal - 35to 4...

Dear Expert,  After Filling & Capping of  Weld Metal, During % Ferrite check via Feritoscope  values are showing less than requirement, How ever all other test i.e. Hardness, PMI etc. are well accepted.  Kindly advice on  possible root cause as well as tips to achieve high Ferrite  Please find below details for your quick ref.   Material Grade - SDSS -UNS s32760 Joint type -Pipe - Butt weld - 18 mm thick  Welding Process - GTAW + SMAW  Welding Consumable - ER 2594 + E 2594-15 % Ferrite - GTAW ( Root ) - 35%, SMAW ( Capping) - 25 -28 %, Base metal - 35to 40%, HAZ - 32 to 35%  % Ferrite - Spec Req - 30  to 70% Inerpass mentained - 100°C for GTAW, 120°C for SMAW Heat input - GTAW - 0.8 to 1 KJ/mm SMAW - 1.2 KJ/mm -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group...

Hi, I would like to know the basis of deciding the hydro test calculation for strength test 1.5*DP and 1.1*DP for tightness test. And why normally for CS pipeline we are going with 24 hours tightness test. Thanks and Regards, Ayoub -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/1A81DAD5-5FB4-4FA1-9BFE-212F19B9C89B%40gmail.com .

Hi there, Can I use AWS B2.1 for identifying the material grouping while preparing AWS D1.1 WPS? AWS D1.1 got a material grouping  and AWS B2.1 also have material grouping,  could some one please confirm  AWS D1.1 and AWS B2.1 is same grouping ? if your answer is YES I went  through AWS D1.1: 2020 Table 5.3 (Table 5.3 - Approved Base Metals for Prequalified WPSs (see 5.3))   found out API 5L X52 is a Group II material Then i went to AWS B2.1   Table C.1 -- List of Base Metal Specifications—Ferrous Alloys  :  found out API 5L X52 is a Group I material. Much appreciated your kind help -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To vie...

In case of MTC non Availability or traceability chemical, mechanical and heat treatment condition to be proved.  All test required by A105 and some additional test for heat treatment condition to be carried out.  On Thu, 22 Apr 2021, 09:12 Babur Khan, < mbabur.bwp@gmail.com > wrote: Dear Experts, One of our contractor purposed PMI for ASTM A105 Flanges due to lake of inspection documents. As my understanding PMI is suitable for HSLAS, SS and DSS. For carbon Steel we can check if there is something happened im change of welding consumables for welding. Please share your experience. Babur Khan Lashari Sent from my iPhone Muhammad Babur Khan Sent from my iPhone -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to mater...

Dear Khan ; PMI can be opted but it's not an alternative to chemical testing .  Yor statement " For carbon Steel we can check if there is something happened im change of welding consumables for welding" is not clear ...Can you specify . Well .What about physical properties ? On Thu, 22 Apr 2021 at 09:12, Babur Khan < mbabur.bwp@gmail.com > wrote: Dear Experts, One of our contractor purposed PMI for ASTM A105 Flanges due to lake of inspection documents. As my understanding PMI is suitable for HSLAS, SS and DSS. For carbon Steel we can check if there is something happened im change of welding consumables for welding. Please share your experience. Babur Khan Lashari Sent from my iPhone Muhammad Babur Khan Sent from my iPhone -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubs...

I think the message is loud and clear now and I hope group members will take it in the right direction.  On Sun, Apr 25, 2021 at 10:29 José Juan Jiménez Alejandro < jjjimeneza@gmail.com > wrote: I know, but someone has to give you an answer, maybe many of them keep silence and caution, it is not my case. El vie, 23 abr 2021 a las 22:52, Ramin Kondori (< raminkondori@gmail.com >) escribió: Dear Mr. José Juan Jiménez Alejandro, I do not know why you felt it is addressed to you. This is a general message... -------------------------------------------------------- But let's get back to the subject matter... We have been in this situation before and it was sorted out. But as I said, every once in a while, we see it happening again; which is unfortunate... This is a professional group and all the group members are expected to act accordingly... Being respectful is not only about using nice words; sometimes people disrespect each other by their actions... Whenever anyone has a...

I know, but someone has to give you an answer, maybe many of them keep silence and caution, it is not my case. El vie, 23 abr 2021 a las 22:52, Ramin Kondori (< raminkondori@gmail.com >) escribió: Dear Mr. José Juan Jiménez Alejandro, I do not know why you felt it is addressed to you. This is a general message... -------------------------------------------------------- But let's get back to the subject matter... We have been in this situation before and it was sorted out. But as I said, every once in a while, we see it happening again; which is unfortunate... This is a professional group and all the group members are expected to act accordingly... Being respectful is not only about using nice words; sometimes people disrespect each other by their actions... Whenever anyone has a question, it is common sense that he/she does some research before taking other people's time. Anyone who can send an email to the group, obviously has access to websites like Google and almost in...

Hello, Please read this book. It covers various issues related welding of clad plates, pipes in great details. You may find answers to many of your questions here.   Regards.   Pradip Goswami.P.Eng, IWE. Independent  & Consulting Welding & Metallurgical Specialist Saudi Aramco Approved Designated Welding Engineer(DPWR) Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/ Email:pgoswami@rogers.com,pradip.goswami@gmail.com Cell/Whasapp:1-905-9793232   From: PK M <pkmqaqc@gmail.com> Sent: April 23, 2021 10:55 PM To: materials-welding@googlegroups.com Subject: Re: [MW:32321] I need complete detail or reports for successful cladding welding   Dear All, I need complete detail or reports for successful cladding welding .. What are the quality controls usually applied for a cladding welding / pipe weld joint? What are the possible problems that may occur during the welding of cladding? The question raised based on avoiding even Single weld def...