The lap joint flange is practically identical to a slip-on except that it has a radius at the intersection of the bore and flange face. This radius is necessary to have the flange accommodate a lap joint stub end . The stub end is mated with the lap joint flange and used together in piping systems. There are many uses for this type of assembly, from saving costs to creating joint systems.
Lap joint flanges slide directly over the pipe and are most commonly used with stub end fittings. A pipe is usually welded to the Stub End and the Lap Joint pipe flange is free to rotate around the stub end. The benefit of this is that there will not be any issues with bolt hole alignment. Lap Joint pipe flanges are often used for applications that require frequent dismantling.
Lap joints do not come with any facing, and are therefore considered flat faced.
We provides ASME Code and Non Code Industrial lap joint flanges for the Petrochemical, Process, & Waterworks industries. ANSI, API, AWWA pipe flanges in carbon, stainless, alloys and chrome steel.
These lap joint flanges are available in all of our stainless steel and chrome-moly grades,from ½” to 36” and beyond, class 300 to 2500. We can also source many of your other grade requirements.