Materials & Welding

As previously mentioned, for a 2" Schedule 160 pipe coupon with a thickness of 8 mm , Welder 1 is qualified for a maximum thickness of 16 mm per QW-452.1(b) . This 16 mm qualification limit applies specifically to the process used. If a second coupon is welded using the SMAW process at the same 8 mm thickness, it will also qualify the welder for a maximum of 16 mm . According to QW-452.3 , the diameter qualification range for a 2" test coupon is 25 mm to unlimited for both GTAW and SMAW welders. The qualified welding position will be determined in accordance with QW-461.9 . Furthermore, per  Note 3 of Table QW-452.1(b) , a test coupon thickness of 3/4 in. (19 mm) or greater must be used when qualifying a combination of three or more welders , regardless of whether they use the same or different welding processes.  Because your current test coupon thickness is only 8 mm , it cannot be used for this purpose. In the future, if you wish to p...

Team, Can a welder who is qualified under API 1104 perform pipe welding (as per Section 9) without any restrictions? If so, where is this stated, and could you provide an explanation? If not, where is the reason for this restriction specified? Please Provide Standard & Clause.. Thank you. Pkm -- 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/CAFoQ_ncC4o5of223PozUqFesAORYEjYCvrwSYdmmUTnnod7yMg%40mail.gmail.com .

  A welder qualified to API 1104 is not automatically qualified to perform other types of pipe welding without restrictions.  API 1104, Clause 6.2.2, states that a welder must be requalified when essential variables change. Check the fol lowing   against the welder's qualification record: Welding process: SMAW qualification does not automatically qualify the welder for GTAW or GMAW. Welding progression: Changes between vertical-up and vertical-down progression can require requalification. A change in the 'F' number of the consumables. Confirm the specific requirements of Clause 6.2.2 or 6.3.2, as applicable  for  p osition, pipe diameter, and other applicable  variables. So, a welder qualified to API 1104 (year 2021) may perform production pipe welding within the limits of the applicable   qualification and in accordance with the approved WPS. If you are using any other edition, verify the correspondin...

Dear Bhavani Sir, My question is this:  Can a welder who is qualified under the API 1104 standard perform welding work on ASME B31.3 process piping systems—in accordance with ASME Section IX—without any additional qualification? Thank you.  Best Regards. PKM On Mon, 26 Oct 2026, 7:51 am Bhavani Prasad Emani, < emanibhavani@gmail.com > wrote: Hi PKM. Strictly "No" . Under API Standard 1104, Section 9 is about acceptance standards for nondestructive testing; it is not the welder-qualification section. Welder qualification is covered by Section 6. For a welder qualified by single qualification, Clause 6.2.2 (Scope) specifies the limits of that qualification and the changes that require requalification. For multiple qualification, Clause 6.3.2 (Scope) provides broader cover...

standard bifurcation must be followed quality welder for different codes as required to avoid confusion  On Tue, Oct 27, 2026 at 9:59 AM PK M < pkmqaqc@gmail.com > wrote: Dear Bhavani Sir, My question is this:  Can a welder who is qualified under the API 1104 standard perform welding work on ASME B31.3 process piping systems—in accordance with ASME Section IX—without any additional qualification? Thank you.  Best Regards. PKM On Mon, 26 Oct 2026, 7:51 am Bhavani Prasad Emani, < emanibhavani@gmail.com > wrote: Hi PKM. Strictly "No" . Under API Standard 1104, Section 9 is about acceptance standards for nondestructive testing; it is not the welder-qualification section. ...

Dear PKM, No. An API 1104 qualification alone does not qualify a welder to weld ASME B31.3 process piping. The governing requirement is ASME B31.3-2024, para. 328.2 : welders must be qualified in accordance with ASME Section IX, subject to the modifications in B31.3. Whether the welder needs a new test depends on the existing qualification record. If the employer can document a valid Section IX qualification that covers the proposed weld and that the employer is entitled to use, a repeat test may not be necessary. Paragraph 328.2.3 allows acceptance of a previous employer’s qualification under specified conditions; it does not grant automatic recognition of an API 1104 qualification. If the only record is an API 1104 qualification and Section IX compliance cannot be demonstrated, the welder must qualify under Section IX for the proposed work. See QW-301.2 for qualification testing and QW-301.4 for the qualification record. Please check the editions adopted for your project. Best ...