Originally Posted by
JohnDThompson
But the maximum temperature is much lower for brazing than it is with welding.
Yes, at the weld bead itself but the distance the heat transfers is so much less that the adjacent, thinner tubing actually sees much less heat.
Expanding on FBinNY's posting above, so-called "fillet brazed" joints made without lugs were used on both ends of the quality spectrum. Some very high quality custom frames were made using that technique as well as low quality cheap ones.