Picture 2 is okay if it is as per ASME B16.5. As far as picture 2 is concern, it looks like vendor has welded 1" size forging on 2" size hub. Thats you have to check. If it is one piece then its okay and if 1" pipe welded on 2" hub then you have to check as per requirements.
Regards
From: vinod.kataria@blissanand.com
To: materials-welding@googlegroups.com
Subject: [MW:10194] Reducing Flange
Date: Mon, 7 Mar 2011 13:36:13 +0530
Dear All,
Please find attached the photograph of the two 2" X 1" Reducing Flange and advice if we can use both these flanges. Please note the difference in both these flanges as below:-
1. Photo 1 Reducing Flange 2"X1" in this flange the Hub bigger diameter is as of standard 2" flange and it is further reduced to 1" so that 1" pipe can be welded on this flange.
2. Photo 2 Reducing Flange 2"X1" in this flange the Hub bigger as well as smaller diameters are as of standard 1" flange so that 1" pipe can be welded on this flange.
Now I request you all to please advise if we can use both these flanges without any deviation from the code.
Regards
Vinod Kataria
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