diameter and thickness limit
Ahmed Husain
Dear All,
My query is in regard to welder performance qualification diameter and thickness limit as per ASME Sec IX
As per QW 452.3, upper diameter limit is unlimited.
As per QW452.1b, for test coupon 13 mm and above, qualification limit is ‘maximum to be welded.’
I would like to know that this “maximum to be welded” is to be considered same as unlimited or there is any limit.
With regards,
A.Husain
Suresh
As per QW 452.3, upper diameter limit is unlimited.
That means , you can go for unlimited Dia which has no limit .....
As per QW452.1b, for test coupon 13 mm and above, qualification limit is ‘maximum to be welded.’
That means how much you can able to weld to prove to make good sound welds .....,this criteria is only for thickness ........not Diameter .
Thank you
Suresh
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Suresh
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manpreet
If any welder weld a single process (either SMAW or GTAW) with 13mm (with min. 3 or more passes) and above then one is qualified to weld in that process for unlimited thickness, if less than 13mm then qualified thickness is (2*t) where t is weld metal thickness.
"Max. to be welded" is corelated to qualified thickness in WPS, suppose if you qualified welder on 13mm weld metal thickness with SAW process and have a WPS qualified for 3" thickness in the same process, then welder can weld upto 3" thickness in SAW process.
Regards
Manpreet Singh
On Sun, 30 Jan 2011 18:28:32 +0530 Ahmed Husain wrote
>
Dear All,
My query is in regard towelder performance qualification diameter and thickness limit as per ASME Sec IX
As per QW 452.3, upper diameter limit is unlimited.
As per QW452.1b, for test coupon 13 mm and above, qualification limit is ‘maximum to be welded.’
I would like to know that this “maximum to be welded” is to be considered same as unlimited or there is any limit.
With regards,
A.Husain
>
> --
>To post to this group, send email to material...@googlegroups.com
>To unsubscribe from this group, send email to materials-weld...@googlegroups.com
>For more options, visit this group's bolg at http://materials-welding.blogspot.com/
>The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
>
muthu barathi
As per QW 452.1 b you have weld minimum 3 layers and as per
1. Less than 1 (25) Size welded Unlimited
2. 1 (25) to 27⁄8 (73) 1 (25) Unlimited
3. Over 27⁄8 (73) 27⁄8 (73) Unlimited
the above points to be considered.
On Sun, 30 Jan 2011 18:26:32 +0530 wrote
>
Dear All,
My query is in regard towelder performance qualification diameter and
>
To post to this group, send email to material...@googlegroups.com
>
To unsubscribe from this group, send email to materials-
>
For more options, visit this group's bolg at http://materials-
welding.blogspot.com/
>
The views expressed/exchnaged in this group are members personel views
and meant for educational purposes only, Users must take their own
decisions w.r.t. applicable code/standard/contract documents.
>
Thanking You,
Honesty is the best Policy
With Warm Regards,
Muthu Barathi P
Mobile No:00962788269821 (Jordan)
00962775401951
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