Can anyone tell me the weldability of black iron to ASTM A53 grade "A" steel. I'm trying to determine whether or not a black iron plug valve can be welded to ASTM A53 grade "A" 1" steel pipe. If this is possible I would like to just spot weld the valve to the pipe, what rod would be appropriate for this application? Should I just try to to use a weld end steel valve to weld to the end of this pipe?
Thanks!
Steve