Materials & Welding

For single V groove not required back chiping if root weld done with TIG process. If SMAW process used for root weld, then back chip need because of penetration and slag issues. On Sat, 23 Aug 2025, 8:06 pm Ashishranjan - Domech Fabricators Pvt.Ltd., < planningdfplril@gmail.com > wrote: Thanks Sumit for response.  But my question is i have attached two weld pictures. In one pictures it clear that double v shows in that back chip we do from inside but what about the single side pictures back chip required or not. Regards, Ashish Ranjan Save a tree...Please consider your environmental responsibility. Before printing this e-mail message, ask yourself whether you really need a hardc opy. " Confidentiality Warning : This message and any attachments are intended only for the use of the intended recipient(s), are confidential and may be privileged. If you are not the intended recipient, you are hereby notified that any review, re-transmission, conversion to hard copy, copying, circ...

  Interpretation #: BPV IX-18-34  Record Number: 18-771  Subject Description: SC IX; QW-401.1 and QW-403.6 - Thickness Range Qualified for Impact Testing Standard Designation: BPV Section IX Par/Fig/Table: QW-401.1 and QW-403.6 Edition/ Addenda: 2017  Background :  A welding procedure qualification was performed on a 40 mm thick test coupon in 1G position by GTAW (10 mm) and SMAW (30 mm). Tension and bend tests were performed on the 40 mm plate.  A second welding procedure qualification was performed on a 6 mm plate in 3G position by GTAW and only impact testing was performed. A third welding procedure qualification was performed on a 6 mm plate in 3G position by SMAW and only impact testing was performed. All of the essential variables remained the same except for the coupon thickness.  Question:  May the PQRs listed above, support a WPS (GTAW+SMAW) for material requiring notch toughness with a qualified base material thickness range of 5 mm to 200 mm, GTAW weld metal thick...

Hi experts, I'm need information about 347H material weldability ( welding process, rod/electrode, temperature control, pwht, impact test?!, ....) Could you help me with references please. Thank you very much. Thanks and Regards,  ----- زكرياء غراب GHRAB Zakaria   Tunisia : +216 96 635 805 Bénin : +229 97 128 387 Yesterday is the past, tomorrow is the future; and today? Today is the present, the gift: Enjoy it! Le lun. 11 août 2025, 07:53, Kannayeram Gnanapandithan < kgpandithan@gmail.com > a écrit :   Interpretation #: BPV IX-18-34  Record Number: 18-771  Subject Description: SC IX; QW-401.1 and QW-403.6 - Thickness Range Qualified for Impact Testing Standard Designation: BPV Section IX Par/Fig/Table: QW-401.1 and QW-403.6 Edition/ Addenda: 2017  Background :  A welding procedure qualification was performed on a 40 mm thick test coupon in 1G position by GTAW (10 mm) and SMAW (30 mm). Tension and bend tests were performed on the 40 mm plate.  A second welding procedure q...

Dear Welding Experts, We have recently completed PQR qualification on a 220 mm thick joint using a combination of SMAW + SAW processes.  Material-SA 5160 GR.70  SMAW deposited thickness: 111 mm(E7018-1) SAW deposited thickness: 109 mm(EH10K) I now need to prepare a WPS for the SMAW process only. Could you please clarify up to what thickness this WPS will be qualified for based on the deposited SMAW thickness? Best Regards Pankaj -- 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/CAJF_nWOGv24pUQHerd_WTUQJXcrCJSoteFRGkdZwMzwGrgidXQ%40mail.gmail.com .

As per sec IX Without impact 5mm to 1.33T,  With impact 16mm to 1.33T Max deposit thickness also 1.33T Regards   Saurabh Jain On Tue, 12 Aug 2025 at 2:54 PM, pankaj pachahara < pankajpachahara@gmail.com > wrote: Dear Welding Experts, We have recently completed PQR qualification on a 220 mm thick joint using a combination of SMAW + SAW processes.  Material-SA 5160 GR.70  SMAW deposited thickness: 111 mm(E7018-1) SAW deposited thickness: 109 mm(EH10K) I now need to prepare a WPS for the SMAW process only. Could you please clarify up to what thickness this WPS will be qualified for based on the deposited SMAW thickness? Best Regards Pankaj -- 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+u...

So our max deposit thickness in WPS will be -220X1.33 =292.6 We will not consider the thickness we have deposited by smaw process. We will consider Our PQR test coupon 220 thick.    On Tue, 12 Aug 2025 at 7:03 PM, Saurabh Jain < ensaurabh@gmail.com > wrote: As per sec IX Without impact 5mm to 1.33T,  With impact 16mm to 1.33T Max deposit thickness also 1.33T Regards   Saurabh Jain On Tue, 12 Aug 2025 at 2:54 PM, pankaj pachahara < pankajpachahara@gmail.com > wrote: Dear Welding Experts, We have recently completed PQR qualification on a 220 mm thick joint using a combination of SMAW + SAW processes.  Material-SA 5160 GR.70  SMAW deposited thickness: 111 mm(E7018-1) SAW deposited thickness: 109 mm(EH10K) I now need to prepare a WPS for the SMAW process only. Could you please clarify up to what thickness this WPS will be qualified for based on the deposited SMAW thickness? Best Regards Pankaj -- https://materials-welding.blogspot.com/ http...

Base metal thickness (impact-qualified) you have now : from 6 mm PQRs - 3 mm to 12 mm . 1.   GTAW weld-metal thickness (impact-qualified) you have now : G TAW from the 6 mm coupon (practically ≤12 mm      unless  the PQR deposited 10+ mm). 2.   SMAW weld-metal thickness (impact-qualified) you have now : SMAW from the 6 mm coupon (again, small, not      anywhere  near 200 mm). 3.   What you do not have : any impact-tested PQR that can justify base thickness up to 200 mm or GTAW weld metal      20 mm / SMAW weld metal 200 mm for an impact-required WPS. The 40 mm non-impact PQR cannot be used to      fill that gap.   What you need to do to reach the ranges you want: To qualify the base thickness up to 200 mm for impact toughness 1.   Obtain a PQR with impact testing on a coupon T ≥ 100 mm (As most rules let you qualify up to 2T ). If you take      T -100 mm  and do impact tests according to the spec, you can qualify up to 200 mm (subject to ot...