ASMI Weldolet requirement

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Hey everyone, new to the site here, but just had a qucik question.  I was wondering if anyone could tell me what the required amount of passes is needed to fill in the bevel of a weldolet to the run pipe.  Also would it be recommended to to lace the passes afterwords.Also right now we ware looking at weldolets from 1" to 3" outlets and welding them to 3" pipe to 36" pipe if this info is at all needed to answer the question.If there is anyone that can help me with this i would greatly appreciate it.Thanks
Reply:That's a good question I've been some places that wanted them all the way out to the edge and then straight across to header, some places that wanted them all the way out to the edge and then tapered out onto the header where it ends up looking kind of like a fillet weld or something and then some places only want the weld as thick as the base metal on the header, on standard wall that's usually about 3 passes maybe 4.After seeing them done so many different ways I've often wondered which way is the right way myself, although when your the welder you pretty much got to give them what they want which ever way it is.Maybe somebody who knows will come along and fill us both in.
Reply:A good starting point would be to look at the manufacturer's website.  Here is a link to the Bonney Forge website for example.  They show their weldolets and other fittings and how they recommend filling them out.  I personally prefer to line lace thread/weld o lets.  I just think it looks better than stringers.  Hope this helps.
Reply:ASME B31.1 (2010 Edition) 127.4.8(C) states that tc, the minimum cover fillet weld throat dimension, is the smaller of 0.7 x tnb, the wall thickness of the branch fitting (weld-o-let), and 1/4 inch.However, to get the weld fillet dimension, you have to multiply that number by √2.  Since the wall thickness of the weld-o-let is generally more than 3/8 inch, the 1/4 in constraint will control.  (0.25)(1.414)=0.354 in.Rounding up, we'll say 3/8 inch is the minimum fillet weld size.  If the company wants to put an uneven leg on it, it will be larger in one dimension and slightly smaller in the other.
Reply:Weldolets that aren't cheap knockoffs (like those from Bonney Forge) have two "lines" on them.  The smaller groove, and the OD of the skirt.  You ONLY weld the smaller groove, NOT out onto the skirt.  Look at 127.4.8(E) in B31.1 as well for a pictorial representation of what should be occurring, and the appropriate note references.Matt provided a link to the Bonney Forge catalog, which is a great resource.