Materials & Welding

Dear All, Could you please advise SAW what is Thickness range Machine Welding Operator? QW-351 — Welders explicitly states that the thickness of weld metal deposited by each welding process shall be considered as the thickness of weld metal when using Table QW-452.1(b). However, QW-360 — Welding Variables for Welding Operators does not contain such a requirement. For Machine Welding, QW-361.2 includes, for example: change in welding process; direct visual control ↔ remote visual control; deletion of automatic arc voltage control; deletion of automatic joint tracking; addition of welding positions; deletion of backing; single pass/side ↔ multiple passes/side. There is no QW-404.30 / thickness limitation specified there. For SAW Welding Operators, Table QW-354 shows: QW-404.30 — t, Weld Deposit as an essential variable for Semiautomatic SAW. However, this does not mean that the operator’s qualified thickness range is determined through QW-452....

I have a client who wants corrugated hose in inconel 601 grade . Currently we are able to make in stainless steel . When we do production for inconel 601 corrugated hose , the welding stays consistent for a meter and then it breaks apart . Thickness : 0.2mm Does anyone have experience in welding Inconel 601 grade . What gas do you recommend for the same ? -- 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/e7b3f0a5-c59a-4f38-b2cd-1d05a9c58192n%40googlegroups.com .

Hello, For orbital/longitudinal TIG welding of Inconel 601 at this gauge: Primary shielding: pure Argon (99.999%, welding grade) — standard choice for nickel alloys, avoid helium additions for thin gauge (helium increases heat input, which you don't want given your thermal buildup issue). Purge gas (ID of tube): pure Argon , with oxygen content held below roughly 20-50 ppm at the weld zone — nickel alloys need a tighter O2 threshold in the purge than stainless does. If your purge system was set up for stainless (which tolerates more O2), that alone could be your entire problem. Avoid any CO2 or O2 additions (sometimes used to improve arc stability on stainless) — these are not compatible with nickel-based alloys and will cause oxide-related weld degradation. Check that your trailing shield gas flow and coverage length are still adequate at whatever line speed you're running — nickel alloys generally need a longer/better trailing shield than stainless at the s...

  QW-122 – Pipe Welding Positions.  QW-122 defines the pipe welding positions used for qualification. Purpose of this clause: This paragraph only  defines the welding positions used in qualification. It does not state that a separate  WPS is required for each position . QW-303 – Limits of qualified positions and diameters.  QW-303.1 – Groove welds states that a welder or welding operator who passes a groove weld qualification test is qualified for  the groove weld, fillet weld, and tack weld positions within the limits shown in Table QW-461.9. The important point is that  position qualification belongs to the welder, not to the WPS . QW-461.9 – Performance qualification position limits. This table gives the qualification ranges. For groove welds on pipe: 1G qualifies for the 1G position only   2G qualifies for 2G & 1G ...

Refer API RP 582 Regards  Sent from Yahoo Mail for iPhone On Tuesday, August 11, 2026, 2:16 PM, hvala...@gmail.com < hvalaalpesh@gmail.com > wrote: Can anyone suggest suitable filler wires for welding of SS 310 tubes to SS 316L tube sheet?  Does lack of Mo in ER 310 filler wires makes them unsuitable for the use in hydro-carbon service? Can we use ER 309L Mo ? -- 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/2393ab33-b01f-4184-b4a7-75381dce4cban%40googlegroups.com .

If the operating temperature is high , I would seriously consider ERNiCr-3 (Alloy 82) rather than trying to solve the problem by moving from ER310 → ER309LMo. Nickel-alloy fillers are frequently used for difficult dissimilar-metal joints because they tolerate the chemistry gradient/dilution between different alloys and can provide a more forgiving weld-metal structure. This is especially relevant if PWHT or substantial thermal cycling is involved. 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, circulation or other ...

Programmable orbital GTAW power source, minimum ~300–400 A, pulsed TIG, AVC, oscillation, programmable multi-level sequences, cold-wire feeder, water-cooled orbital heads, data logging, purge-gas control, and interchangeable heads covering approximately 34–324 mm OD. 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, circulation or other use of this message and any attachments is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return email and delete this message and any attac...

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 parent materials from groups 1 to 11".(@ Page 10). 1.My question is Group 1 Cover all Group 1 to 11? Thanks & Best Regards, AKHIL            SAC Accredited  Welding Inspector (Cert. No: 316877/2) SAC Accredited - Independent Testing Agency (ITA) Mobile:  +65 8453 3547, +66 994018820   || DID:  +65 6909 6535 email:  raiseita03@gmail.com   RAISE ENGINEERING PTE. LTD.  48, Hillview Terrace                        ...

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 ...