Socket weld flanges, steel welding flange are similar to slip-on
flanges, except they a bore and a counter bore. The counter bore is
slightly larger than outer diameter of the matching pipe, which allows
the pipe to be easily inserted. The socket welding flange, weld flanges
is welded to the end of pipe that the pipe can be bolted to another pipe
with a similar flange. A restriction is built in the bottom of the bore
that enables the pipe to disconnected and reconnected with ease.Standards: