WeldFit’s hot tap fittings have been used successfully in thousands of hot tapping operations around the world. Consisting of a full-encirclement fitting and a weld-neck flange, our hot tap fittings are designed and manufactured to ensure the integrity of the piping system is maintained. WeldFit’s full-encirclement hot tap fittings feature extruded outlets for branch sizes up to 48″ and fabricated branches for larger sizes.

There are several advantages to using extruded outlet fittings, including the ability to design reinforcement into the nozzle and the elimination of the weld between the header and the branch, which is difficult to radiographically inspect. Typically the mating flange is ANSI class 150, 300, or 600; although other pressure classes and flange styles are available.

All of WeldFit’s hot tap fittings are manufactured in accordance with our ISO 9001:2015 quality program and are compatible with major models of hot tapping equipment. In compliance with most pipeline design codes, all pressure containing welds are 100% radiographed.

WeldFit’s standard hot tap fittings are designed to meet the requirements of ASME B31.3 and B31.4/8. Our hot tap fittings are made using a variety of material grades, from A234 Grade WPB or WPC with A105 flanges to high-yield X65 or better grades, when required. Other fitting and flange materials are available to match customer requirements and existing pipeline materials.


Hot Tap / Line Stop Fitting
Sureloc Line Stop Tees
Purge & Equalization Fittings