This is a close-up foto of grade 31 1

[Good_Guy]

This is a close-up foto of grade 316SS butt weld. Does the foto reflect any weld defects/ poor quality/ inclusions etc etc?

Thanks for your support

Foto attached

 

[XL83NL]

It depends on which acceptance criteria are being set to this weld. Which design code are you using? A few more photo's would be useful, as it's hard to see if there's any 'depth' issues, like undercut.
Are you in any way experienced in visual testing of welds?

Huub
- You never get what you expect, you only get what you inspect.

 

[MJCronin]

Is this how Engineering finally QA/OC ends ? .... Again and again we play the "third world guessing game".....

What is the design code that you are trying to follow ?... Is this part of a high-temperature HRSG steam piping system, or a farm water distribution system for the swine ...

Different international piping codes have different levels of weld examination and acceptance criteria

Weld cell phone photos from a distance evaluated and approved by a group of strangers on an internet website ? ... Is this a smart idea ?

I assume that this is part of a piping system .... but, who knows

If you had enough money to purchase the SS pipe, you should have budgeted enough for experienced and competent weld examination.

Let the extensive Mid-Eastern guessing game begin !!!

Here is a place to start:

https://pdhonline.com/courses/m415/m415content.pdf

MJCronin
Sr. Process Engineer

 

[IRstuff]

Again and again we play the "third world guessing game"

Since when did Australia become 3rd world? ;-)

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

https://www.youtube.com/watch?v=BKorP55Aqvg

faq731-376 forum1529 Entire Forum list

http://www.eng-tips.com/forumlist.cfm

 

[david339933]

1.) Clean the weld properly.
2.) Looks like an arc strike.

 

[LittleInch]

A 2D visual inspection of a sample bit of the weld will only tell you so much. Without the info requested above it is difficult to say and you really need to do something like dye inspection to check for cracks and lack of fusion and then a UT or Xray to check for other items.

There does appear to be a bit of porosity, but not easy to see if that's outside limits or not.

If you want to become an instant expert. try scrolling through this site

https://www.twi-global.com/technica...le as 1% air,in gross surface breaking pores.

or

https://tft-pneumatic.com/blog/identify-welding-defects/#Porosity

Or employ a welding inspector who will either accept and sign or reject like everyone else does.

I assume you do have a WPS and WPQT ??



Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[1503-44]

Australia? Is the weld upside down, or was it welded bottom to top?

 

[weldstan]

Looks like a shielded metal arc capping weld with some slag remaining and a little spatter. No evidence of mechanical deslagging. Other than that, who can tell if it is acceptable or not? Undercut - maybe, maybe not.

 

[1503-44]

It does look like possible undercut along the bottom right side, but 2D, flat on, can be deceiving.

 

[Good_Guy]

XL83NL
I am using AS/NZS 3992:2015 (Pressure equipment—Welding and brazing qualification). This is a butt-weld of a pipe spool that will be cast into a concrete structure. A weld Inspector has certified as acceptable who is employed by the fabricator. I have no formal weld qualifications but can do some quick visual inspections. In this case, I had my own doubts of the WI’s approval. I could see some black spots and was not sure about it
Thank you

david339933
Thank you. I have asked the site team to get the weld cleaned including Pickled and passivated
LittleInch
Thank you

1503-44

Thank you. Not sure how it was welded . There are no undercuts
weldstan
Thank you. There is no evidence of mechanical deslagging or undercut
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A big Thank you to all