Proper J-groove measurement - American Welding Society
The assumption is that the joint is filled flush. The size is a function of the radius of the member forming the groove, the welding position, and of course, the welding process. This is detailed in Table 2.1 and clause 22.214.171.124. If the loads are such that a maximum sized weld isn't necessary, the flare groove doesn't have to be welded flush.
DA: 100 PA: 49 MOZ Rank: 51