If the current ANSI 14.5 drawing standard is applied, would a cross drilled hole that extends entirely though a hollow bar (tube) be interpreted correctly with simply a hole size speified or should the hole be specified as 2X? Does ANSI 14.5 clearly state that a break in a cross drilled hole...
For simplicity,the design can be considered a pipe section with a flange welded on each end. The key issue is the need to machine the faces after welding due to other equipment design considerations.
I see the limitations of hubbed flanges in section VIII and it appears to eliminate the weld...
I have an application for 6.00" - 900# flanges (3000 psi test pressure) in 2205 Duplex material. I believe I want to specify a full penetration weld for inspection purposes as well as to meet section VIII boiler and pressure flange standards.
I plan to machine the flange faces, bolt holes and...
