Materials & Welding

Dear Sirs, Good day. As per API 1104, we are going to run PQRs soon; So, Please give your suggestion and comments for welding the following API 5L series of pipes with the selected Class of welding rods & Fillers : First, let me know if the selected AWS class are OK to proceed or not ? 1) API 5L Gr. X42 :  GTAW : AWS Class 5.18 ER70S-6 +  FCAW : AWS 5.20 E71T-1C 2) API 5L Gr. X65 : GTAW : AWS 5.28 ER80S-Ni1 + SMAW : AWS 5.5 E8018-C3   3) API 5L X70 :  GT : AWS 5.28 ER80S-Ni1 + SMAW : AWS 5.5 E9018M (OR) FCAW : AWS 5.29 E91T1-K2C  Also recommend me for welding parameters such as Amps, Volts, Gases, Preheat, Post Heat, Interpass Temps with site links to make these PQRs successful. Best Regards, Saravanan Sornam, Ansan-Si, S.Korea -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 ...

Mr. SS, You have not indicated the parent metal thicknesses to recommend the consumable sizes. For a lower thickness pre & post heating is not required. Towards welding parameters such as amps, volts, gases,  please refer to the technical literature obtained  from the manufacturers of the consumables. CS On Thu, 16 Jul 2026 at 22:37, sridhar cn < sridharcn305@gmail.com > wrote: Dear Mr SS, Your proposed consumables are generally in the right direction, but there are a few points worth correcting and  verifying,  particularly with respect to  strength matching and low-temperature toughness.  My comments as follows: 1. API 5L X42 : “GTAW” AWS A5.18 70S-6 + “SMAW” E7018 (or) “ FCAW” AWS 5.20 E71T-1C is suitable.                           If Ar/CO₂ gas is used...

Dear Akhil, Your statement from P1 to P11 is true for welders ability to weld & capable of having correct root penetration as well as fusion. but you need supporting qualified PQR established with correct consumables & Amp. Voltage Heat input. Hope my answer satisfies your query. Regards, Chetan Kapadia  Kapadia Consultants  Yahoo Mail: Search, organise, conquer On Mon, 20 Jul 2026 at 12:35, AKHIL MENON <akhil19951995@gmail.com> wrote: Good Afternoon, According to EN 9606-1,  Parent material groups are "Non-Essential", But need to record in the Welder Certificate as per Code Requirement. There is a statement " Welding with a filler material in one group qualifies the welder for welding with all other filler materials within the same group, as well as other groups, listed in Table 3, and welding on ...

EN 9606-1 qualifies on the filler material (the FM group). In most cases one FM group, for example FM1 will qualify to other FM groups – for FM1 also for FM2. See table 3 in 9606-1.   In theory FM1 filler material may be used for all parent material groups (1 – 11 as per ISO 15608). But you will never use a welder qualified to FM1 filler material (for carbon steel) to weld parent material group 8 (austenitic stainless steel).   The qualification test will be based on a qualified WPS – or a pWPS (that is also allowed). The welder, when using the issued certificate, shall weld within the range of qualifications for his certificate. So he cannot weld to a WPS qualified to for example group 8.1.   Med venlig hilsen Kristian Lund Jepsen M. Sc. (Mech. Eng.) Senior Chief Consultant 1101248 - Mechanical ...

Dear experts, My contractors wants to use approved 2G position WPS for production joints which in 5G/6g position other than 2G position and WQT for 6G position. References to ASME. Can we proceed to do that or do we need to use approved WPS in 6G/ALL positions? Regards, Sya -- 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/a2026e50-8b41-42a7-bd00-1852f82aa1ean%40googlegroups.com .

What is the weld process? cordially, Jay Poojary On Sat, 25 Jul 2026, 12:21 Dominant QC < dominantqc@gmail.com > wrote: Dear experts, My contractors wants to use approved 2G position WPS for production joints which in 5G/6g position other than 2G position and WQT for 6G position. References to ASME. Can we proceed to do that or do we need to use approved WPS in 6G/ALL positions? Regards, Sya -- 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/a2026e50-8b41-42a7-bd00-1852f82aa1ean%40googlegroups.com . -- https://materials-welding.blogsp...