Materials & Welding

  I recommend sending a query to the Manufacturer's Technical Department to obtain their clarification and reach a final conclusion.   On Sun, Jun 7, 2026 at 5:05 PM Nambirajan Avudaiappan < nambirajanavudaiappan@gmail.com > wrote: Kindly explain what is impossible ? On Sun, 7 Jun 2026, 16:30 Muhammad Ikram, < qcikram@gmail.com > wrote: Impossible  On Sun, 7 Jun 2026, 10:04 am Nambirajan Avudaiappan, < nambirajanavudaiappan@gmail.com > wrote: Dear Experts, During my review of the WPS, I noted that a 4 mm GMAW wire has been specified. However, this wire size is not listed in the manufacturer’s technical datasheet available on their website. Although the vendor has submitted the wire MTC, there appears to be a discrepancy between the documented specifications and the datasheet. ...

I understand this WPS is for line pipes L-seam welding. It is a usual practice in Line pipes to do Tack pass with GMAW. I have encountered wire dia of 2.4mm, 3.2mm etc. as the Setup is different from the generally GMAW welding processes. 4.0mm dia. also seems fine to me.  Also check, if the weld is part of the final weld or will be removed in back gouging. In case of later, not much to worry about. On Monday, June 8, 2026 at 2:13:37 PM UTC+5:30 pradip kumar Sil wrote:   I recommend sending a query to the Manufacturer's Technical Department to obtain their clarification and reach a final conclusion.   On Sun, Jun 7, 2026 at 5:05 PM Nambirajan Avudaiappan < nambirajan...@gmail.com > wrote: Kindly explain what is impossible ? On Sun, 7 Jun 2026, 16:30 Muhammad Ikram, < qci...@gmail.com > wrote: Impossible  ...

. On Wed, 14 May, 2025, 12:15 pm Surendar Gunasekaran, < surendarrgs@gmail.com > wrote: As per API RP 582, Recommended filler for Inconel 825 is E/ERNiCrMo-3 Regards, Surendar On Wed, May 7, 2025 at 5:04 PM Elavarasan Mech < elavarasan1861994@gmail.com > wrote: Dear all  INCONEL 825 matching filler   ER NI FECR-1 its correct please guide me Regarding  Elavarasan -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials...

Dear Nambi rajan, It is quite common in the line pipe manufacturing industry. It is an automatic GMAW welding process equipped with mostly 1000A DC capacity power sources with CV mode. This power sources can be used for both GMAW/SAW automatic welding process and SAW pipe seams made with tack welds, the melting and coalescence of the tack weld into  the final weld seam shall be verified by macrographic testing as required in the API 5L or ASTM specifications. Some manufacturer may remove the tack welds by grinding or machining after the Inside welding on the pipe which is also allowed as per API 5L(Refer Tack welds Clause 8.4 of API 5L). Higher the pipe thickness, higher the wire diameter. I have used upto 4.8mm dia GMAW wire for 45mm thick line pipes with more than 1000A current for GMAW Tack welds. The diameter 4mm and above are non standard size wires still it is available based on customer request(Refer ASME II C SFA 5.02M). So this diame...

Dear All, Greetings of the day.... I have a project and am working on EN standard material.It is my first time for EN material. The two types of material are given below: 1)EN 1.4401 2)EN 1.5415 Welding materials categories: 1)EN 1.4401 + EN 1.4401 2)EN 1.4401 + EN 1.5415 3)EN 1.5415 + EN 1.5415 May you please guide the WPS for this material,Bevel face,electrode characteristics and which specification/standard will be used? Thanks & Regards Saumey shrivastav   -- 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 visit https://gr...

 Appendix M is a non-mandatory appendix. Accordingly, its requirements cannot be enforced by the Client unless they are expressly stated in the contract or incorporated by reference in an applicable project document.   On Thu, Jun 4, 2026 at 9:40 AM 'manish kulkarni' via Materials & Welding < materials-welding@googlegroups.com > wrote: Yes , it should be done in PQR as well . Convince customer for the approach Sent from Yahoo Mail for iPhone On Thursday, June 4, 2026, 11:31 AM, Nambirajan Avudaiappan < nambirajanavudaiappan@gmail.com > wrote: This requirement is not applicable to PQR; it is applicable to WPQR. For WPQR, can we measure the ferrite content using a ferritoscope during production in the shop, instead of performing the point count method? Regards, Nambirajan A ...

Hi pradeep   It is client requirement. On Sun, 7 Jun 2026, 08:12 pradip kumar Sil, < pradipsil@gmail.com > wrote:  Appendix M is a non-mandatory appendix. Accordingly, its requirements cannot be enforced by the Client unless they are expressly stated in the contract or incorporated by reference in an applicable project document.   On Thu, Jun 4, 2026 at 9:40 AM 'manish kulkarni' via Materials & Welding < materials-welding@googlegroups.com > wrote: Yes , it should be done in PQR as well . Convince customer for the approach Sent from Yahoo Mail for iPhone On Thursday, June 4, 2026, 11:31 AM, Nambirajan Avudaiappan < nambirajanavudaiappan@gmail.com > wrote: This requirement is not applicable to PQR; it is applicable to WPQR. ...

Dear Experts, During my review of the WPS, I noted that a 4 mm GMAW wire has been specified. However, this wire size is not listed in the manufacturer’s technical datasheet available on their website. Although the vendor has submitted the wire MTC, there appears to be a discrepancy between the documented specifications and the datasheet. Additionally, I am surprised to observe that welding has reportedly been carried out at a current of 900 amps using this wire. I would appreciate your clarification on the feasibility and justification of this parameter, as it seems unusually high for GMAW applications. Kindly provide your technical inputs and supporting references for the above points. Best regards, Nambi -- 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 fr...

Dear Experts, Good morning! Has anyone performed ferrite–austenite phase evaluation for Duplex Stainless Steel (DSS)? As per my understanding, this requirement has been incorporated in ASME Section IX under Non-Mandatory Appendix M (M-600). I would appreciate if you could share your experience, procedures followed, or any practical challenges faced during implementation. Whether we can do with any machines without help of labratories Looking forward to your valuable inputs. -- 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 visit https://groups.google.com/d/msgid/materials-welding/CAJuyB2W4yRfBs9N1zWWFd6EfNApA8u7-dqMYgr0HsXCkEDJVhA%40mail.gmail...

The steps are : 1. Establish the PQR with extreme care as welding parameters will play crucial role in phase formation. 2. Do the ASTM 562 ( ferrite count by metallography) and ferritoscope( this is a portable machine and to be used on production weld principle is magnetic here ). 3. Welding on production weld shall be done by welding parameters established during PQR establishment. 4. With ferritoscope production weld phase can be measured. On Thu, Jun 4, 2026, 9:13 AM Nambirajan Avudaiappan < nambirajanavudaiappan@gmail.com > wrote: Dear Experts, Good morning! Has anyone performed ferrite–austenite phase evaluation for Duplex Stainless Steel (DSS)? As per my understanding, this requirement has been incorporated in ASME Section IX under Non-Mandatory Appendix M (M-600). I would appreciate if you could share your experience, procedures followed, or any practical challenges faced during implementation. Whet...