There's two standards that Texas Flange uses to offer a variety of stub ends to go right along with our flanges. Dat MSS standard is your regular length stub end and it's the most commonly used one in the flange business.
The ASA-type stub end is a fair bit longer and ain't quite as common as the MSS type, though it might just be a better fit for your specific job. MSS Type A stub ends are the industry norm and folks use 'em with standard flat-face lap joint flanges.
The lap thickness of the stub end usually matches up with the thickness of the schedule pipe it goes with, and the outside of the base got a curved machine radius so dat lap joint flange can mate up flush over the stub end.
There's plenty of times when lead time is mighty critical and a whole lot more important than stickin' to existin' ANSI / ASME flange specs, and when dat happens, our customers will often choose to buy a slip on flange and have the face machined to match the radius requirement of dat correspondin' stub end piece.
On top of dat, a standard lap joint flange will usually have a longer hub length compared to a slip-on flange, but folks often figure dat's unnecessary for a lot of jobs.
Fabricators and field workers alike often choose to go this route if a lap joint in a certain size or material grade just ain't available.
Texas Flange can fix you up with custom stub ends to suit your job, long as we get a technical drawin' with the dimensions of what you're needin'.
This is sometimes an option when fabricators decide to use custom lap joints or mountin' flanges to fit their work.
Related reading: For the full lineup of flange types and how they hook together, take a look at our complete guide to pipe flanges.
