Symbol for fillet weld with no filler? 3

[BigBunny]

I have a question on how to properly call out a weld that our manufacturing team has been doing for decades. The symbol does not seem to be correct to me, so I am looking to update the drawings if it makes sense.

This is a flange welded to the end of a tube using TIG with no filler - a fusion weld. There is a small step between the ID of the tube, and the ID of the flange bore. It is currently called out as a fillet weld with 50% penetration, as they have trouble controlling distortion if they penetrate all the way through the tube wall.

A fillet weld does not seem correct since there is no filler to add material and actually form a fillet, but I am having trouble finding guidance on this one. Is this a variation on a tee weld or another type?

Pictures attached.

Thanks in advance for any help!

E

 

[r6155]

@ EdStainless
We do not know details of (OP): CODE, dimensions, materials, pressure/temperature, etc.
This sketch is like a socket weld. The 1.5mm gap is to allow free expansion of the tube during welding and to prevent cracking.

Regards

 

[EdStainless]

When these are done on tubesheets the rubes are expanded 'to contact' in order to prevent tight side - loose side issues.
Yes his is more like a socket weld so some gap is prudent.

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