Hi experts,
According to ASME Section IX, is it acceptable to combine the qualified thickness and diameter ranges of a welder across multiple performance qualification tests for the same welding process?
As per QW-301.2, "each organization shall qualify each welder or welding operator for each...
Hi experts,
Could you please share your experience regarding CVN impact testing for ER70S-6 filler metal?
I’m currently qualifying a PQR for A333 Gr.6 to API 5L Gr.X65 using ER70S-6 (GTAW + SMAW).
When conducting the weld metal impact test (full-size specimens) at -46 C degree, I obtained very...
Hi experts,
The welder has just completed a weld on a Duplex stainless steel pipe (A790 UNS S31803). After welding, He noticed a significant misalignment between the tee and the pipe — clearly, the joint has distorted more than expected.
To correct this, he applied TIG arc heat onto the cap...
Hi everyone,
I'm currently working with EEMUA 158, but I’m finding the qualified diameter range a bit confusing. Could anyone help clarify how it actually works?
1. If the diameter of the tubular is below 508mm and not within ±50% of the
diameter qualified;
=> PQR with OD = 453mm (<508mm)...
Hi guys,
I got the Safety Data Sheet of Kobelco LB-52U welding consumbale, and it mentioned the storage condition of LB-52U like this:
How can we set-up a room without humidity? Is there anything wrong here?
Can you please share me the experience to storage of LB-52U? What is temperature and...
Hi experts,
I’m working on creating a pWPS and PQR for welding ASTM B148 C95800, and it’s my first time dealing with this material. Could you please suggest the best filler metal for the GTAW welding process?
Thanks a lot for your help!
Hi all,
I have PQR according to ASME IX and ASME B31.3 welded by GTAW A106 Gr.B with CVN test temp. as below:
- Weld Metal CVN test at -40 deg C: Passed.
- Fusion Line CVN test at -40 deg C: Passed.
- Fusion Line +2 CVN test at -20 deg C: Passed.
So can I develop a WPS with CVN test temp. at -20...
Hi experts,
I am a little bit confused with foot note g, table 10.12 AWS D1.1 about positions qualified.
The welder tested with box tube to plate same as figure 10.22 without backing for CJP groove weld.
But in foot note g, table 10.22 AWS D1.1 stated that "not qualified for joints welded from...
Hi experts,
Can you pls advice me the qualification range for base metal according to AWS D1.3.
Our company conduct welding sheet steel A1011 Gr.36 Type 1 to sheet steel A1011 Gr.36 Type 1, so I am looking for a state in AWS D1.3 for this.
Your advice/response will be appreciated. Thank so much!
Hi experts,
Our company qualify welders with 6" test coupon using GTAW wire AWS A5.14 ERNiCrMo-3 and SMAW electrode AWS A5.1 ENiCrMo-3 according to AWS D1.1. Can you please advise me what the qualification range of filler metal for welders. I did not find out the clause mention to those ones.
I...
Hi all,
Can you help me explain what roll number and item number are in below MTC?
Why do those steel plates have same roll number but different heat number?
Thanks all.
