Long weldnecks are almost identical to weldnecks, but for two differences: they do not have a bore, and the total height (length) of the flange is 12” – though sometimes 9” is also specified.

Our long weldneck flanges are available in 150 or 300 pound class, with raised, flat, or RTJ facings, in all of our stainless steel grades.  We can also source many of your other design requirements.