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Whitephone
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Join Date: Jan 2010
Location: Mineral wells Tx
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Fillet Weld or Butt Weld?

02/16/2010 1:31 PM

The question, the weld of a branch connection must be considers like fillet weld or as a butt weld. Reference to ASME B31.3 Fig 328.4.4 and 328. 5.2A
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munneykhan
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Join Date: Aug 2008
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#1

Re: Fillet Weld or Butt Weld?

02/17/2010 12:28 AM

Rerence to ASME B 31.3 fig 328.4.4 and 328.5.2A for branch connection it always considered as a fillet joint.
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Anonymous Poster
#2

Re: Fillet Weld or Butt Weld?

02/17/2010 8:57 AM

Don't just look at the pretty pictures - READ 328.5.4 (e) Welded Branch Connections
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Whitephone
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#3
In reply to #2

Re: Fillet Weld or Butt Weld?

02/18/2010 3:52 AM

Estimated guest, AWS typifies 6 different welded unions. In this case (Branch connections) look that we have Butt's mixture with fillet weld, which must be born in mind to for the % of not destructive tests and also to the control of repairs. Of any form, thanks for your commentary.
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PMoon
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#4

Re: Fillet Weld or Butt Weld?

02/25/2010 8:26 AM

Neither fillet nor butt, but full penetration groove welds. Almost by definition; a fillet weld is a partial penetration weld and is used on a welded branch connection as reinforcement, or in welder lingo a "cover pass." A butt weld is a full penetration groove weld used when the two spools of pipe are in parallel alignment. Butt welds also get some reinforcement, but since there is no angle between the two pieces being joined, its not considered a fillet.

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