Materials & Welding

Dear Sir,   First of all P No. of Alloy material shall be mentioned. If it is P 5A & 5B then as per FW's specification if t </= 13 mm.- Cool under insulaiton to ambient temp., If 13<t</=25 mm.- 350º C. for 2 hours, If 25<t</=50 mm.- 350º C. for 4 hours, If t> 50 mm.- Intermediate S.R. at 600º C for 2 hours or 650º C for 1 hour.   Might the above be helpful to you.   With regards,     C. R. GANDHI (MANAGER- Q. A./ Q.C.) --- On Sat, 3/31/12, Zakaria ghrab <zakaria.ghrab@gmail.com> wrote: From: Zakaria ghrab <zakaria.ghrab@gmail.com> Subject: [MW:14031] Alloy stels PWHT - Hydrogen Bake To: materials-welding@googlegroups.com, materials-welding@goolegroups.com Date: Saturday, March 31, 2012, 3:50 PM Dear Experts,    need some reference / support from ASME B31.1 for performing hydrogen bake in alloy steels when is not possible to do immediatly PWHT after Welding for any case.   - What's minimum t...

Dear Sajid, Please find below the attachments from API 1104 for the acceptance criteria for undercut. Thanks and Regards, M.SarojKumar AWS-CWI and ASNT Level-II NDT in RT,UT,PT,MT Inspection Engineer. On Fri, Mar 30, 2012 at 9:24 AM, sajid sakhidas < sajidsakhidas@gmail.com > wrote: Dear sir, Good morning, What is acceptance criteria for root ubndercut for flow line and pipeline(API1104 or ASME B31.4 and B31.8),if possible please give me refrance. Thanks -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. -- To post to this group, send email to materials-weldin...

Dear Friend,            as per my understanding the welder should be renewed with NDT report. and that NDT report shall be signed by any client for evidence. we have to attach the report with the welder performance record and renew with date of renewal and date of next expiry. Actually speaking we have to maintain welder history record. from that any client could understand this welder is capable to give good weld. i hope u could catch me. thank you. -- Regards, J.C.Andrews Sr.QA/QC Bahrain On Thu, Mar 29, 2012 at 2:00 PM, yahya albalushi < qci.y.albalushi82@gmail.com > wrote: Gents, For the welder who has been doing production weld for the last 6 months since his qualification test,Where his company keeping his performance record.what are the required continuation documents to be provided to the client in each 6 months? overmore, does his WQT record needs to be renewed by means of getting stamp of clients QC to validate his qualification? Regards, Yahya QC(PIP...

Dear Experts,    need some reference / support from ASME B31.1 for performing hydrogen bake in alloy steels when is not possible to do immediatly PWHT after Welding for any case.   - What's minimum time after welding  when it's mandatory to perform this intermediate cycle - Holding time and temperature ! - Others requirements (if any)   I know that it's necessary to perform this heat treatment but i didn't get support from Code.   Regards -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

Dear Experts, We are based in Middle  East, can anyone suggest Seamless Pipes & Fittings Manufacturers conforming to below given Standards. 1) ASTM A666 / ASTM A250 type 304L Thanks with, Best Regards, Santosh Karnire Senior Procurement Engineer P.O. Box 4988, Fujairah, United Arab Emirates. www.permapipe.ae Tel   : +971 6 5573338 Ext: 438   |    Fax    : +971 9 2282541 Cell  : +971 55 6471359              |   Email : skarnire@permapipe.ae **** Setting the international standard for Pre-insulated Pipe for the District Cooling and Oil & Gas Industries. This message, including any attachments, may contain confidential information & may also be legally privileged. The information contained in this e-mail message is intended only for the use of the rightful & intended addressee & must not be disclosed t...

Hi   The maximum stress and strain rate limits given in ASTM A370 paragraphs 11.4.1-11.4.3. The stress or strain rate influences the value of the material strength. A faster strain rate will yield larger strength values, and conversely, slower rates of testing will produce lower values.  However to provide a consistent testing method , an elastic loading rate of 50 ksi per minute is to be used until after strain hardening.   Regards   Prem Nautiyal --- On Wed, 3/28/12, Pushpraj Anand <pushprajanand34@gmail.com> wrote: From: Pushpraj Anand <pushprajanand34@gmail.com> Subject: [MW:14006] Speed of Tensile Test To: "materials-welding" <materials-welding@googlegroups.com> Date: Wednesday, March 28, 2012, 5:09 PM What is the speed of tensile test for Procedure qualification as per section IX? i read some coads they recommended for some speed of tensile test,is it mandatory to follow or we can do at any speed? -- Regards, Pushpraj Anand -- To p...

Hi Nilesh, 'matter of fact the lower range value is equally important. If the heat input is reduced as compared to PQR values, tendency to harden increases as cooling rate is increased. In your WPS, you need to mention the range as recorded in the PQR. TG On Fri, Mar 23, 2012 at 11:53 AM, Prashant Shelar < pshelar@lamprell.com > wrote: Hi Nilesh,   Being impact as a requirement, you will have to limit the maximum Heat Input value in WPS as qualified in the PQR. You will have to indicate the values on WPS with upper limit restricted to that in PQR.   Thanking you, Rgds,   Prashant             From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of waman nilesh Sent: Friday, March 23, 2012 11:07 AM To: materials-welding@googlegroups.com ; materials-welding@goolegroups.com Cc: wamannp@yahoo.com Subject: [MW:13977] Heat input value in WPS   Dear Experts, I have question...

Rajesh, No. It is more or less decided by a design engineer for individual product. TG On Fri, Mar 30, 2012 at 8:42 AM, Prakashraman B < prakashraman.b@doosan.com > wrote: Dear Mr. Patel,   Ref. NB-2540 of ASME Sec III - RULES FOR CONSTRUCTION OF NUCLEAR FACILITY COMPONENTS     Regards, Prakash Raman .B From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of Rajesh.Patel@Linde-LE.com Sent: 29 March 2012 12:17 To: materials-welding@googlegroups.com Subject: [MW:14013] UT Acceptance criteria for Forging   Dear all is there any other acceptance standard available for UT of forging as per ASME/ASTM except Section VIII DIVII and  SA 388 various level Best Regards Rajesh Patel -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://m...

Dear Pradip Sir, Thank you very much for valueble informations. We are going to conduct another PWHT mock test,considering all these facts and skilled technicians have been called for the same. Regards, Sandeep Qc Engineer -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

Dear Rohit, Here i have enclosed for Gr.91 forming & welding Tips, as required by you. On Wed, Mar 28, 2012 at 2:41 PM, Rohit mn < rhmalhotra84@gmail.com > wrote: Dear Experts... Can anyone provide me PPT on P91 material and how to perform welding and what are the special precaution need to be taken..... rgds Rohit -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. -- Regards, G.jayaprakash Alstom Projects India Ltd, Durgapur. 09679997249 -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to ...

Dear Mr. Patel,   Ref. NB-2540 of ASME Sec III - RULES FOR CONSTRUCTION OF NUCLEAR FACILITY COMPONENTS     Regards, Prakash Raman .B From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Rajesh.Patel@Linde-LE.com Sent: 29 March 2012 12:17 To: materials-welding@googlegroups.com Subject: [MW:14013] UT Acceptance criteria for Forging   Dear all is there any other acceptance standard available for UT of forging as per ASME/ASTM except Section VIII DIVII and  SA 388 various level Best Regards Rajesh Patel -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their o...

Dear sir, Good morning, What is acceptance criteria for root ubndercut for flow line and pipeline(API1104 or ASME B31.4 and B31.8),if possible please give me refrance. Thanks -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

S andeep,   AWS D-10.10 is written to facilitate local PWHT for all types of C-Mn and low alloy steels. Grade-91 requires special considerations. Attached is the specification for P-91 and P-92 steels written by one of the well reputed EPC organization in North America. This specification,though a bit generic is downloadable form the link below.   I ve highlighted the clauses very relevant to local PWHT on P-91 . You may read and use these recommendations at your discretion.   To answer to your point, P-91 requires a complete soak at the suggested PWHT cycle. For guidance in the  attached spec  if the O.D is @ 760 Deg then the ID should be 730 Deg .If induction heating of up to 139 mm thickness could attain this temperature range, then this technique would be acceptable otherwise  do not use it subject to your client and your management's discretion.   As I mentioned before P-91 is a dangerous steel, IT IS NOT JUST ANOTHER ...

S andeep,   AWS D-10.10 is written to facilitate local PWHT for all types of C-Mn and low alloy steels. Grade-91 requires special considerations. Attached is the specification for P-91 and P-92 steels written by one of the well reputed EPC organization in North America. This specification,though a bit generic is downloadable form the link below.   I ve highlighted the clauses very relevant to local PWHT on P-91 . You may read and use these recommendations at your discretion.   To answer to your point, P-91 requires a complete soak at the suggested PWHT cycle. For guidance in the  attached spec  if the O.D is @ 760 Deg then the ID should be 730 Deg .If induction heating of up to 139 mm thickness could attain this temperature range, then this technique would be acceptable otherwise  do not use it subject to your client and your management's discretion.   As I mentioned before P-91 is a dangerous steel, IT IS NOT JUST ANOTHER ...

Thanks John,   I do know about the 6 months renewal of qualification if the welder did not weld.But specificaly I am asking about the welder who is continuing production weld for the last 6 months since his qualification date.   My doubts are: 1.I was working with my former employer where we used to get monthly welder performance recod + when a welder complets 6 months from his qualification date ,the contractor QC used to bring a record of his accepted weld joints within the last 3 months so we as a client QC RENEW the welder card by means of  giving company's stamp & signeture so he becoms renewed to carry on welding for the next 6 months.over more, If we find a welder in the field doing welding without Welder ID we suspend him from welding unless his card with him.Even though we know his performance is satisfactory . 2. I am now with new employer where I noticed the welders cards without renewual date .Since then I started to assume that they must be renewed as what...

If you are going by ASME Boiler and Pressure Vessel Code, there are no requirements (Interpretation IX-95-38) provided by ScIX on how or when continuity is to be recorded. ScIX only states that the weldor is qualified for 6 months from the last time he used the PROCESS (Interpretation IX-10-17). Below is the HSB(r) information on IX-95-38: ASME Code Interpretations Status: Currently Valid Status Description: Interpretation: IX-95-38 Subject: Section IX, QW-322, Expiration and Renewal of Qualification Date Issued: January 6, 1997 File Number: BC96-132 Related Documents: Question: Is it a requirement of QW-322 for a manufacturer to maintain records to demonstrate a welder's or welding operator's continuing qualification for a process from the date of the original qualification test? Reply: Section IX does not address how conformance to QW-322 is demonstrated. Other book sections may address the maintenance of records. The above interpretation was transcribed by HSB Code Servi...

As per my understanding there is no need to get renewal of WQT if the welder still work at the same company of the WQT he attend. only required if the welder work with other company for a duration 6 month above then he needs to get renewal. if you want prove to your client for your welder performance, do PRODUCTION TEST. On Mar 30, 2012 12:11 AM, "yahya albalushi" < qci.y.albalushi82@gmail.com > wrote: > > Gents, > > For the welder who has been doing production weld for the last 6 > months since his qualification test,Where his company keeping his > performance record.what are the required continuation documents to be > provided to the client in each 6 months? overmore, does his WQT record > needs to be renewed by means of getting stamp of clients QC to > validate his qualification? > > Regards, > > Yahya > QC(PIPING) > Oman > > -- > To post to this group, send email to materials-welding@googlegro...

Gents, For the welder who has been doing production weld for the last 6 months since his qualification test,Where his company keeping his performance record.what are the required continuation documents to be provided to the client in each 6 months? overmore, does his WQT record needs to be renewed by means of getting stamp of clients QC to validate his qualification? Regards, Yahya QC(PIPING) Oman -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

Dear Rohit, May be we can discuss further on P91 welding, selection of filler alloys, heat cycle, etc. Meanwhile, please review the attached brochure. Thanks With Kind Regards Amitabha Bhattacharya Head-Application Technology   Bohler Welding Group India Pvt. Ltd. A-140, Road No 23, Wagle Industrial Estate Metropolitan, Ground Floor Thane 400 604, India Ph: +91 22 2582 8855/4228 4400 Mobile ;+91 9833998246 Email: amitabha.bhattacharya@bwgindia.com Web: www.bohlerweldinggroupindia.com A Böhler Welding Group Company This email message and any attachments are for the sole use of the intended recipient(s) and contain confidential and/or privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message and any attachments -----Original Message----- From: materials-welding@googlegroups.com [mailto: materials-welding@googlegrou...

Dear Puspraj, I think following answer satisfies your query : Tensile strength increases but ductility decreases as the testing speed is increased. The speed of the cross head of the tensile machine therefore needs to be controlled and BS EN 10002 specifies a stress rate range of 6MPa per second to 60MPa per second. The ASTM specifications have similar - but not identical - requirements.                                                                    Effect of speed of testing on strength and ductility   On Wed, Mar 28, 2012 at 5:09 PM, Pushpraj Anand < pushprajanand34@gmail.com > wrote: What is the speed of tensile test for Procedure qualification as per section IX? i read some coads they recommended for some speed of tensile test,is it mandatory to follow or we can do at any speed? -- Regards, Pushpraj Anand -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe...

Dear All In my project,contractor uses two types swivel ring flange that the rating & type of material of them are same, but swivel ring sit for one of them has conic at the end and remind has flat face. Is it possible this geometry cause failure during operation?if yes why? Regards

Dear all is there any other acceptance standard available for UT of forging as per ASME/ASTM except Section VIII DIVII and  SA 388 various level Best Regards Rajesh Patel -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

All materials comes under same P number. So no need to qualify again.   Arvinda On Tue, Mar 27, 2012 at 10:19 AM, Anthony < hepolitodias@gmail.com > wrote: we generally have welders qualified to A36 in our firm as per sec presently we are working on a project demanding S355 JR /JO and we have qualified the procedure and wleders also but can i use my other welders who are qualified in A36[3G]  and A106 Gr B [6G] as per ASME sec IX -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe...

Dear Mr.Zakaria,   You are absolutely ok.   Once welder is qualified on GTAW procees , he can weld both SS and CS materials in same process. If welder goes for SMAW  needs to qualify in SMAW process since changing F number.   Arvinda On Mon, Mar 26, 2012 at 9:03 PM, Zakaria ghrab < zakaria.ghrab@gmail.com > wrote: Dear Experts,   I need some confirmation / explain from your part. I have welders qualified for GTAW process in carbon steel coupon test material, according my understanding for ASME sect IX welders performance qualification, welders is qualified to weld Stainless steel under all essential variable requirement are ok. IT's our case (Same FN°6 filler metal, added backing gas....). But our client, said that, according ASME sect IX QW-423.1, welders can not be qualified to weld Stainless steel (PN°8) , it's mention that "When a base metal shown in the left column is used for welder qualification, the welder is qualified to weld all combinatio...

Hi, QW 423.1 says clearly that "ALL COMBINATION OF BASE METALS" .  It means If you qualified with P.No.1 then the welder qualified to weld all combination of base metals  of P- or S-No. 1 through P- or S- No. 11, P- or S-No. 34,and P- or S-No. 41 through P- or S-No. 49. ALL Combination means either P1 to P1 or P1 to other P numbers as specified. So he can weld P1 to P1 as well as P1 to P8 etc.,and as specified in the right column of QW423.1. When a base metal shown in the left column is used for welder qualification, the welder is qualified to weld all combinations of base metals shown in the right column , including unassigned metals of similar chemical composition to these metals.   Thanks & Regards, (Karthik) Karthikeyan.S QA/QC Manager German-Thai Boiler Engineering Cooperation Limited. Rayong Factory ; 379 Moo.6 Soi 8, Tambol Pananikom, Nikompattana, Rayong 21180 THAILAND Tel : +66 38 897 035-9 Ext. 137 Fax : +66 38 897 034 Hand Phone: 0066 8925...

Only if you can meet the requirements of QW-423.1 and QW-423.2 for unlisted materials similar to listed materials. I have found it is generally a tough sell to customers. John A. Henning Welding & Materials -----Original Message----- From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of Anthony Sent: Tuesday, March 27, 2012 1:20 AM To: Materials & Welding Subject: [MW:13998] Can SMAW welders qualified in matl Grade A36 weld also S355 ..ASME section IX we generally have welders qualified to A36 in our firm as per sec presently we are working on a project demanding S355 JR /JO and we have qualified the procedure and wleders also but can i use my other welders who are qualified in A36[3G] and A106 Gr B [6G] as per ASME sec IX -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bo...

While your customer is being a bit thick, I think you can show the essence of what the Code means by an old interpretation, IX-83-70.  As noted by HSB this interpretation is more limiting than the current Code but the essence is that for a given filler metal, i.e. F-number, the welder can be qualified by alternative base metals.  In the case of the interpretation the filler metal is SMAW and desired result is to weld nickel based base metals.  The Code Case clearly states that welding P1 to P1 with the appropriate filler metal qualifies welding P4X.  One could also look at Interpretations IX-86-51 and IX-89-15.   Status Description: QW-423.1 has expanded the range of qualified production base metals beyond those listed in the Question. (2010 Edition) Interpretation: IX-83-70 Subject: Section IX, QW-310.5(c) Date Issued: June 27, 1983 File Number: BC83-270 Related Documents: Question: A manufacturer has qualified WPS for welding P-Nos. 41 through 45 with the SMAW process using the a...